Recorded price history USD Listing start period All years 5 years 1 year
Recorded US-dollar price history Logarithmic price scale (price + 1). Horizontal axis: listing start date. Vertical axis: recorded price in US dollars. Filled dots have recorded sales; open dots have no recorded sales. The oxide step line shows calendar-month medians, with gaps for missing months. 0 1 10 100 1000 Mar 2017 Jul 2019 Dec 2021 May 2024 Oct 2026 2017-03-23: US$99.00; no sale recorded 2017-03-25: US$154.56; no sale recorded 2017-04-02: US$122.00; no sale recorded 2017-04-12: US$113.54; no sale recorded 2017-04-24: US$99.00; no sale recorded 2017-05-15: US$111.59; no sale recorded 2017-06-17: US$138.68; no sale recorded 2017-06-19: US$111.00; sold recorded 2017-07-15: US$118.49; no sale recorded 2017-07-18: US$110.25; no sale recorded 2017-08-08: US$140.64; sold recorded 2017-10-27: US$98.46; no sale recorded 2017-10-27: US$89.43; no sale recorded 2018-01-15: US$112.00; no sale recorded 2018-04-01: US$325.10; no sale recorded 2018-08-03: US$108.04; no sale recorded 2018-12-26: US$93.04; no sale recorded 2019-10-14: US$152.00; no sale recorded 2019-10-22: US$162.42; no sale recorded 2019-11-16: US$281.89; no sale recorded 2019-12-14: US$82.29; no sale recorded 2020-01-09: US$92.30; no sale recorded 2020-04-25: US$100.00; no sale recorded 2020-05-01: US$135.00; sold recorded 2020-05-05: US$100.00; no sale recorded 2020-05-08: US$0.99; no sale recorded 2020-05-21: US$100.00; no sale recorded 2020-06-04: US$100.00; no sale recorded 2020-06-14: US$95.00; no sale recorded 2020-06-22: US$110.00; no sale recorded 2020-07-07: US$390.00; no sale recorded 2020-08-03: US$86.43; no sale recorded 2020-08-04: US$90.90; no sale recorded 2020-08-25: US$96.12; no sale recorded 2020-09-09: US$407.00; no sale recorded 2020-10-19: US$244.44; no sale recorded 2020-12-19: US$87.63; no sale recorded 2020-12-19: US$99.77; no sale recorded 2020-12-19: US$83.16; no sale recorded 2020-12-19: US$92.85; no sale recorded 2021-01-07: US$203.70; no sale recorded 2021-01-29: US$246.89; no sale recorded 2021-02-03: US$207.77; no sale recorded 2021-02-03: US$209.81; no sale recorded 2021-02-03: US$211.85; no sale recorded 2021-02-24: US$116.84; no sale recorded 2021-05-18: US$140.00; no sale recorded 2021-06-01: US$135.00; no sale recorded 2022-01-10: US$128.22; no sale recorded 2022-01-10: US$128.38; no sale recorded 2022-01-11: US$106.13; no sale recorded 2022-02-27: US$286.00; no sale recorded 2022-03-31: US$740.08; no sale recorded 2022-04-09: US$287.00; no sale recorded 2022-04-10: US$112.31; no sale recorded 2022-04-14: US$256.68; no sale recorded 2022-04-14: US$266.72; no sale recorded 2022-04-14: US$249.11; no sale recorded 2022-04-14: US$188.37; no sale recorded 2022-04-27: US$85.00; sold recorded 2022-05-09: US$149.60; no sale recorded 2022-05-14: US$254.40; sold recorded 2022-05-25: US$668.04; no sale recorded 2022-06-01: US$160.19; no sale recorded 2022-06-03: US$285.75; no sale recorded 2022-06-09: US$141.29; no sale recorded 2022-06-09: US$128.70; no sale recorded 2022-06-13: US$163.67; no sale recorded 2022-06-13: US$183.04; no sale recorded 2022-06-13: US$172.00; no sale recorded 2022-07-11: US$172.08; no sale recorded 2022-07-11: US$172.12; no sale recorded 2022-07-11: US$172.05; no sale recorded 2022-07-12: US$256.40; no sale recorded 2022-07-12: US$256.49; no sale recorded 2022-07-23: US$172.09; no sale recorded 2022-07-30: US$176.34; no sale recorded 2022-08-01: US$150.00; no sale recorded 2022-08-10: US$170.98; no sale recorded 2022-08-17: US$617.56; no sale recorded 2022-08-18: US$285.75; no sale recorded 2022-08-25: US$176.47; no sale recorded 2022-09-02: US$270.00; sold recorded 2022-09-04: US$94.18; no sale recorded 2022-09-07: US$142.29; no sale recorded 2022-09-17: US$285.75; no sale recorded 2022-09-28: US$73.11; no sale recorded 2022-11-02: US$321.14; no sale recorded 2022-11-08: US$281.70; sold recorded 2022-11-25: US$170.66; sold recorded 2022-11-25: US$361.95; no sale recorded 2022-11-25: US$415.00; no sale recorded 2022-11-25: US$260.50; no sale recorded 2022-12-01: US$196.00; no sale recorded 2022-12-06: US$142.42; sold recorded 2022-12-20: US$172.20; no sale recorded 2023-01-16: US$166.15; no sale recorded 2023-01-23: US$126.50; no sale recorded 2023-01-25: US$655.92; no sale recorded 2023-01-30: US$413.40; no sale recorded 2023-01-30: US$656.20; no sale recorded 2023-01-31: US$654.95; no sale recorded 2023-02-01: US$659.57; no sale recorded 2023-02-03: US$256.66; no sale recorded 2023-02-03: US$657.13; no sale recorded 2023-02-08: US$171.06; no sale recorded 2023-02-11: US$618.00; no sale recorded 2023-02-14: US$170.68; no sale recorded 2023-02-15: US$347.89; no sale recorded 2023-02-22: US$469.00; no sale recorded 2023-02-23: US$177.25; no sale recorded 2023-02-28: US$252.00; no sale recorded 2023-03-17: US$285.75; no sale recorded 2023-03-21: US$257.18; no sale recorded 2023-03-27: US$285.75; no sale recorded 2023-03-29: US$260.01; no sale recorded 2023-04-12: US$269.00; no sale recorded 2023-04-16: US$285.75; no sale recorded 2023-04-20: US$270.00; sold recorded 2023-05-02: US$257.18; no sale recorded 2023-05-03: US$256.66; no sale recorded 2023-05-04: US$182.04; no sale recorded 2023-05-05: US$170.96; no sale recorded 2023-05-06: US$202.37; sold recorded 2023-05-19: US$355.90; no sale recorded 2023-05-29: US$255.00; no sale recorded 2023-05-30: US$360.13; sold recorded 2023-06-01: US$130.89; no sale recorded 2023-06-09: US$183.19; no sale recorded 2023-06-10: US$371.20; no sale recorded 2023-06-17: US$248.00; no sale recorded 2023-06-21: US$285.75; no sale recorded 2023-06-25: US$245.00; sold recorded 2023-07-06: US$152.10; no sale recorded 2023-07-28: US$252.00; no sale recorded 2023-08-04: US$171.19; no sale recorded 2023-08-04: US$171.01; no sale recorded 2023-08-05: US$171.71; no sale recorded 2023-08-06: US$48.08; no sale recorded 2023-08-20: US$177.26; no sale recorded 2023-08-20: US$445.00; sold recorded 2023-08-21: US$405.10; no sale recorded 2023-08-28: US$360.45; no sale recorded 2023-09-01: US$94.18; no sale recorded 2023-09-12: US$363.50; no sale recorded 2023-09-16: US$437.40; no sale recorded 2023-09-18: US$195.90; no sale recorded 2023-09-19: US$152.10; no sale recorded 2023-10-06: US$285.75; no sale recorded 2023-10-12: US$171.95; no sale recorded 2023-10-16: US$171.19; no sale recorded 2023-10-27: US$168.99; no sale recorded 2023-10-30: US$130.89; no sale recorded 2023-11-07: US$255.00; no sale recorded 2023-12-25: US$295.00; sold recorded 2023-12-25: US$147.00; sold recorded 2023-12-26: US$269.00; no sale recorded 2024-01-09: US$189.00; no sale recorded 2024-01-14: US$464.30; no sale recorded 2024-01-14: US$441.79; sold recorded 2024-01-14: US$899.00; no sale recorded 2024-01-25: US$75.00; sold recorded 2024-01-30: US$367.75; no sale recorded 2024-02-20: US$238.08; no sale recorded 2024-02-23: US$598.00; no sale recorded 2024-02-23: US$129.99; sold recorded 2024-02-26: US$269.00; sold recorded 2024-02-26: US$425.89; no sale recorded 2024-02-29: US$260.01; no sale recorded 2024-03-05: US$285.75; sold recorded 2024-03-05: US$285.75; sold recorded 2024-03-17: US$157.14; no sale recorded 2024-03-21: US$427.00; no sale recorded 2024-03-21: US$800.00; sold recorded 2024-03-29: US$160.75; no sale recorded 2024-04-02: US$342.81; no sale recorded 2024-04-02: US$156.00; no sale recorded 2024-04-09: US$256.40; sold recorded 2024-04-09: US$189.00; no sale recorded 2024-04-11: US$189.59; no sale recorded 2024-04-30: US$198.40; no sale recorded 2024-05-02: US$172.46; no sale recorded 2024-05-03: US$150.00; no sale recorded 2024-05-04: US$120.00; no sale recorded 2024-05-04: US$29.96; no sale recorded 2024-05-22: US$235.60; no sale recorded 2024-05-30: US$162.67; no sale recorded 2024-06-03: US$83.48; no sale recorded 2024-06-05: US$132.00; sold recorded 2024-06-10: US$93.24; no sale recorded 2024-06-17: US$52.00; no sale recorded 2024-07-01: US$165.23; no sale recorded 2024-07-05: US$142.41; no sale recorded 2024-07-12: US$249.99; no sale recorded 2024-07-18: US$140.00; no sale recorded 2024-07-18: US$140.00; no sale recorded 2024-07-30: US$399.99; no sale recorded 2024-08-21: US$195.00; no sale recorded 2024-08-22: US$193.33; no sale recorded 2024-08-22: US$188.00; no sale recorded 2024-08-22: US$158.00; sold recorded 2024-08-26: US$155.85; no sale recorded 2024-08-26: US$156.25; sold recorded 2024-08-26: US$156.68; sold recorded 2024-08-30: US$156.72; no sale recorded 2024-09-04: US$77.14; no sale recorded 2024-09-18: US$155.40; no sale recorded 2024-09-19: US$188.37; no sale recorded 2024-09-19: US$188.34; sold recorded 2024-09-19: US$188.47; no sale recorded 2024-09-19: US$198.28; no sale recorded 2024-09-19: US$197.28; no sale recorded 2024-10-02: US$133.35; sold recorded 2024-10-11: US$206.33; no sale recorded 2024-10-12: US$152.38; sold recorded 2024-10-25: US$598.00; sold recorded 2024-10-29: US$209.99; sold recorded 2024-11-01: US$198.18; no sale recorded 2024-11-01: US$198.19; no sale recorded 2024-11-03: US$227.98; no sale recorded 2024-11-12: US$355.97; sold recorded 2024-11-19: US$209.99; sold recorded 2024-11-30: US$125.00; no sale recorded 2024-12-06: US$155.78; no sale recorded 2024-12-12: US$200.71; sold recorded 2024-12-12: US$385.00; no sale recorded 2024-12-21: US$110.00; no sale recorded 2024-12-26: US$89.00; no sale recorded 2024-12-27: US$207.77; sold recorded 2025-01-02: US$209.99; sold recorded 2025-01-07: US$209.99; sold recorded 2025-01-09: US$157.00; no sale recorded 2025-01-14: US$185.50; sold recorded 2025-01-20: US$370.00; no sale recorded 2025-01-24: US$580.00; sold recorded 2025-01-24: US$235.18; sold recorded 2025-02-02: US$246.94; sold recorded 2025-02-03: US$208.99; sold recorded 2025-02-06: US$86.60; sold recorded 2025-02-11: US$305.99; sold recorded 2025-02-14: US$209.99; sold recorded 2025-02-16: US$134.43; sold recorded 2025-02-17: US$157.35; no sale recorded 2025-02-22: US$188.27; no sale recorded 2025-02-26: US$150.95; sold recorded 2025-03-04: US$165.20; sold recorded 2025-03-04: US$125.63; sold recorded 2025-03-07: US$209.99; sold recorded 2025-03-08: US$90.22; sold recorded 2025-03-11: US$228.29; no sale recorded 2025-03-12: US$137.96; no sale recorded 2025-03-13: US$209.99; sold recorded 2025-03-16: US$208.99; sold recorded 2025-03-20: US$187.40; no sale recorded 2025-03-24: US$168.99; no sale recorded 2025-03-25: US$156.99; no sale recorded 2025-03-29: US$141.47; no sale recorded 2025-03-31: US$114.88; no sale recorded 2025-04-03: US$209.99; sold recorded 2025-04-14: US$89.00; no sale recorded 2025-04-17: US$209.99; sold recorded 2025-04-18: US$195.80; no sale recorded 2025-04-20: US$208.99; no sale recorded 2025-04-22: US$173.04; no sale recorded 2025-04-24: US$148.91; sold recorded 2025-04-30: US$188.00; no sale recorded 2025-05-13: US$145.78; no sale recorded 2025-05-13: US$154.58; no sale recorded 2025-05-14: US$171.37; no sale recorded 2025-05-15: US$79.99; no sale recorded 2025-05-15: US$230.99; no sale recorded 2025-05-20: US$370.00; no sale recorded 2025-05-22: US$163.85; no sale recorded 2025-05-23: US$2779.99; no sale recorded 2025-05-26: US$209.99; no sale recorded 2025-05-27: US$152.50; no sale recorded 2025-05-28: US$209.99; no sale recorded 2025-05-28: US$148.02; no sale recorded 2025-05-30: US$208.99; no sale recorded 2025-06-04: US$153.80; no sale recorded 2025-06-05: US$209.99; no sale recorded 2025-06-10: US$254.66; no sale recorded 2025-06-12: US$92.58; no sale recorded 2025-06-12: US$92.58; no sale recorded 2025-06-12: US$238.98; no sale recorded 2025-06-17: US$93.67; no sale recorded 2025-06-18: US$188.36; no sale recorded 2025-06-18: US$197.27; no sale recorded 2025-06-18: US$188.46; no sale recorded 2025-06-18: US$198.27; no sale recorded 2025-06-19: US$148.00; no sale recorded 2025-06-21: US$188.26; no sale recorded 2025-06-24: US$150.50; no sale recorded 2025-06-24: US$187.60; no sale recorded 2025-06-25: US$177.77; no sale recorded 2025-06-25: US$209.99; no sale recorded 2025-06-29: US$2664.45; no sale recorded 2025-07-09: US$209.99; no sale recorded 2025-07-11: US$145.50; no sale recorded 2025-07-11: US$145.90; no sale recorded 2025-07-14: US$148.00; no sale recorded 2025-07-15: US$488.00; no sale recorded 2025-07-16: US$208.99; no sale recorded 2025-07-26: US$165.00; no sale recorded 2025-07-30: US$209.99; no sale recorded 2025-08-06: US$79.00; no sale recorded 2025-08-10: US$230.70; no sale recorded 2025-08-20: US$209.98; no sale recorded 2025-08-21: US$209.98; no sale recorded 2025-08-21: US$152.48; no sale recorded 2025-08-25: US$273.98; no sale recorded 2025-08-26: US$198.21; no sale recorded 2025-08-26: US$198.24; no sale recorded 2025-08-26: US$198.26; no sale recorded 2025-08-26: US$198.23; no sale recorded 2025-08-31: US$208.99; no sale recorded 2025-09-01: US$133.09; no sale recorded 2025-09-10: US$223.98; no sale recorded 2025-09-10: US$263.98; no sale recorded 2025-09-10: US$2672.85; no sale recorded 2025-09-11: US$245.80; no sale recorded 2025-09-11: US$179.83; no sale recorded 2025-09-12: US$135.00; no sale recorded 2025-09-12: US$174.83; no sale recorded 2025-09-15: US$250.00; no sale recorded 2025-09-18: US$272.00; no sale recorded 2025-09-20: US$188.25; no sale recorded 2025-09-24: US$100.00; no sale recorded 2025-09-30: US$133.00; no sale recorded 2025-09-30: US$191.34; no sale recorded 2025-10-02: US$95.18; no sale recorded 2025-10-02: US$107.23; no sale recorded 2025-10-07: US$155.35; no sale recorded 2025-10-08: US$153.22; no sale recorded 2025-10-13: US$208.99; no sale recorded 2025-10-15: US$209.97; no sale recorded 2025-10-15: US$209.97; no sale recorded 2025-10-16: US$241.99; no sale recorded 2025-10-20: US$188.30; no sale recorded 2025-10-21: US$245.80; no sale recorded 2025-10-22: US$99.20; no sale recorded 2025-10-24: US$130.93; no sale recorded 2025-10-24: US$187.60; no sale recorded 2025-10-25: US$202.62; no sale recorded 2025-10-30: US$95.00; no sale recorded 2025-10-30: US$180.60; no sale recorded 2025-10-31: US$400.80; no sale recorded 2025-10-31: US$399.80; no sale recorded 2025-11-04: US$105.03; no sale recorded 2025-11-04: US$80.00; no sale recorded 2025-11-07: US$209.98; no sale recorded 2025-11-08: US$93.61; no sale recorded 2025-11-13: US$153.17; no sale recorded 2025-11-13: US$230.97; no sale recorded 2025-11-14: US$173.45; no sale recorded 2025-11-17: US$209.96; no sale recorded 2025-11-18: US$209.94; no sale recorded 2025-11-23: US$188.32; no sale recorded 2025-11-24: US$127.86; no sale recorded 2025-11-25: US$198.22; no sale recorded 2025-11-25: US$198.20; no sale recorded 2025-11-25: US$394.00; no sale recorded 2025-12-02: US$372.48; no sale recorded 2025-12-07: US$113.40; no sale recorded 2025-12-16: US$390.00; no sale recorded 2025-12-19: US$33.84; no sale recorded 2025-12-23: US$236.92; no sale recorded 2025-12-24: US$198.24; no sale recorded 2025-12-24: US$198.18; no sale recorded 2025-12-26: US$133.38; no sale recorded 2026-01-02: US$95.14; no sale recorded 2026-01-06: US$146.97; no sale recorded 2026-01-11: US$310.00; no sale recorded 2026-01-11: US$125.00; no sale recorded 2026-01-13: US$197.25; no sale recorded 2026-01-13: US$188.44; no sale recorded 2026-01-15: US$209.95; no sale recorded 2026-01-20: US$198.54; no sale recorded 2026-01-21: US$179.20; no sale recorded 2026-01-21: US$156.75; no sale recorded 2026-01-26: US$198.05; no sale recorded 2026-01-27: US$376.50; no sale recorded 2026-01-29: US$260.34; no sale recorded 2026-01-31: US$127.44; no sale recorded 2026-02-02: US$95.88; no sale recorded 2026-02-03: US$492.34; no sale recorded 2026-02-03: US$365.50; no sale recorded 2026-02-09: US$194.29; no sale recorded 2026-02-09: US$191.29; no sale recorded 2026-02-11: US$693.68; no sale recorded 2026-02-16: US$462.80; no sale recorded 2026-02-17: US$462.80; no sale recorded 2026-03-02: US$209.97; no sale recorded 2026-03-02: US$209.94; no sale recorded 2026-03-03: US$198.84; no sale recorded 2026-03-05: US$198.54; no sale recorded 2026-03-07: US$462.80; no sale recorded 2026-03-10: US$127.43; no sale recorded 2026-03-11: US$203.84; no sale recorded 2026-03-12: US$121.84; no sale recorded 2026-03-17: US$219.76; no sale recorded 2026-03-19: US$352.04; no sale recorded 2026-03-19: US$462.80; no sale recorded 2026-03-23: US$254.84; no sale recorded 2026-03-23: US$210.75; no sale recorded 2026-03-23: US$356.20; no sale recorded 2026-03-23: US$356.34; no sale recorded 2026-03-24: US$190.36; no sale recorded 2026-03-26: US$970.87; no sale recorded 2026-03-27: US$376.50; no sale recorded 2026-03-29: US$462.80; no sale recorded 2026-03-30: US$462.80; no sale recorded 2026-04-01: US$462.80; no sale recorded 2026-04-01: US$370.71; no sale recorded 2026-04-02: US$230.97; no sale recorded 2026-04-03: US$210.00; no sale recorded 2026-04-03: US$365.50; no sale recorded 2026-04-03: US$230.96; no sale recorded 2026-04-04: US$462.80; no sale recorded 2026-04-06: US$674.25; no sale recorded 2026-04-07: US$462.80; no sale recorded 2026-04-09: US$127.43; no sale recorded 2026-04-09: US$121.21; no sale recorded 2026-04-09: US$183.19; no sale recorded 2026-04-09: US$189.00; no sale recorded 2026-04-13: US$462.80; no sale recorded 2026-04-13: US$128.68; no sale recorded 2026-04-13: US$133.68; no sale recorded 2026-04-15: US$218.76; no sale recorded 2026-04-16: US$427.60; no sale recorded 2026-04-17: US$191.92; no sale recorded 2026-04-17: US$197.02; no sale recorded 2026-04-17: US$196.92; no sale recorded 2026-04-18: US$197.02; no sale recorded 2026-04-18: US$192.02; no sale recorded 2026-04-18: US$197.02; no sale recorded 2026-04-19: US$462.80; no sale recorded 2026-04-22: US$239.34; no sale recorded 2026-04-22: US$158.98; no sale recorded 2026-04-23: US$230.97; no sale recorded 2026-04-23: US$127.36; no sale recorded 2026-04-29: US$357.02; no sale recorded 2026-04-29: US$357.20; no sale recorded 2026-04-29: US$354.40; no sale recorded 2026-04-29: US$126.65; no sale recorded 2026-04-30: US$119.96; no sale recorded 2026-05-06: US$462.80; no sale recorded 2026-05-06: US$445.42; no sale recorded 2026-05-06: US$121.64; no sale recorded 2026-05-09: US$427.46; no sale recorded 2026-05-11: US$230.97; no sale recorded 2026-05-13: US$374.20; no sale recorded 2026-05-13: US$198.54; no sale recorded 2026-05-15: US$375.60; no sale recorded 2026-05-15: US$388.00; no sale recorded 2026-05-15: US$193.00; no sale recorded 2026-05-20: US$126.97; no sale recorded 2026-05-22: US$187.40; no sale recorded 2026-05-23: US$55.00; no sale recorded 2026-05-25: US$230.97; no sale recorded 2026-05-25: US$230.97; no sale recorded 2026-05-28: US$146.10; no sale recorded 2026-05-28: US$188.00; no sale recorded 2026-05-29: US$161.00; no sale recorded 2026-05-29: US$159.00; no sale recorded 2026-05-30: US$176.85; no sale recorded 2026-06-01: US$179.60; no sale recorded 2026-06-05: US$180.00; no sale recorded 2026-06-05: US$371.00; no sale recorded 2026-06-06: US$356.24; no sale recorded 2026-06-06: US$230.97; no sale recorded 2026-06-08: US$463.15; no sale recorded 2026-06-12: US$230.97; no sale recorded 2026-06-12: US$164.23; no sale recorded 2026-06-15: US$127.75; no sale recorded 2026-06-15: US$115.68; no sale recorded 2026-06-15: US$366.20; no sale recorded 2026-06-16: US$141.21; no sale recorded 2026-06-16: US$150.00; no sale recorded 2026-06-16: US$186.88; no sale recorded 2026-06-16: US$117.52; no sale recorded 2026-06-23: US$356.17; no sale recorded 2026-06-23: US$356.27; no sale recorded 2026-06-24: US$75.34; no sale recorded 2026-06-25: US$434.57; no sale recorded 2026-06-26: US$150.65; no sale recorded 2026-06-28: US$356.16; no sale recorded 2026-06-28: US$356.18; no sale recorded 2026-07-01: US$152.94; no sale recorded 2026-07-01: US$147.94; no sale recorded 2026-07-02: US$159.83; no sale recorded 2026-07-02: US$155.35; no sale recorded 2026-07-05: US$276.00; no sale recorded 2026-07-07: US$187.40; no sale recorded 2026-07-07: US$381.00; no sale recorded 2026-07-10: US$356.30; no sale recorded 2026-07-10: US$198.54; no sale recorded 2026-07-11: US$295.06; no sale recorded 2026-07-13: US$347.29; no sale recorded 2026-07-15: US$150.00; no sale recorded 2026-07-27: US$169.03; no sale recorded 2026-08-06: US$138.51; no sale recorded 2026-08-20: US$370.00; no sale recorded 2026-09-02: US$150.00; no sale recorded 2026-10-24: US$311.83; no sale recorded Recorded US-dollar price history Logarithmic price scale (price + 1). Horizontal axis: listing start date. Vertical axis: recorded price in US dollars. Filled dots have recorded sales; open dots have no recorded sales. The oxide step line shows calendar-month medians, with gaps for missing months. 0 1 10 100 1000 Mar 2017 Dec 2021 Oct 2026 2017-03-23: US$99.00; no sale recorded 2017-03-25: US$154.56; no sale recorded 2017-04-02: US$122.00; no sale recorded 2017-04-12: US$113.54; no sale recorded 2017-04-24: US$99.00; no sale recorded 2017-05-15: US$111.59; no sale recorded 2017-06-17: US$138.68; no sale recorded 2017-06-19: US$111.00; sold recorded 2017-07-15: US$118.49; no sale recorded 2017-07-18: US$110.25; no sale recorded 2017-08-08: US$140.64; sold recorded 2017-10-27: US$98.46; no sale recorded 2017-10-27: US$89.43; no sale recorded 2018-01-15: US$112.00; no sale recorded 2018-04-01: US$325.10; no sale recorded 2018-08-03: US$108.04; no sale recorded 2018-12-26: US$93.04; no sale recorded 2019-10-14: US$152.00; no sale recorded 2019-10-22: US$162.42; no sale recorded 2019-11-16: US$281.89; no sale recorded 2019-12-14: US$82.29; no sale recorded 2020-01-09: US$92.30; no sale recorded 2020-04-25: US$100.00; no sale recorded 2020-05-01: US$135.00; sold recorded 2020-05-05: US$100.00; no sale recorded 2020-05-08: US$0.99; no sale recorded 2020-05-21: US$100.00; no sale recorded 2020-06-04: US$100.00; no sale recorded 2020-06-14: US$95.00; no sale recorded 2020-06-22: US$110.00; no sale recorded 2020-07-07: US$390.00; no sale recorded 2020-08-03: US$86.43; no sale recorded 2020-08-04: US$90.90; no sale recorded 2020-08-25: US$96.12; no sale recorded 2020-09-09: US$407.00; no sale recorded 2020-10-19: US$244.44; no sale recorded 2020-12-19: US$87.63; no sale recorded 2020-12-19: US$99.77; no sale recorded 2020-12-19: US$83.16; no sale recorded 2020-12-19: US$92.85; no sale recorded 2021-01-07: US$203.70; no sale recorded 2021-01-29: US$246.89; no sale recorded 2021-02-03: US$207.77; no sale recorded 2021-02-03: US$209.81; no sale recorded 2021-02-03: US$211.85; no sale recorded 2021-02-24: US$116.84; no sale recorded 2021-05-18: US$140.00; no sale recorded 2021-06-01: US$135.00; no sale recorded 2022-01-10: US$128.22; no sale recorded 2022-01-10: US$128.38; no sale recorded 2022-01-11: US$106.13; no sale recorded 2022-02-27: US$286.00; no sale recorded 2022-03-31: US$740.08; no sale recorded 2022-04-09: US$287.00; no sale recorded 2022-04-10: US$112.31; no sale recorded 2022-04-14: US$256.68; no sale recorded 2022-04-14: US$266.72; no sale recorded 2022-04-14: US$249.11; no sale recorded 2022-04-14: US$188.37; no sale recorded 2022-04-27: US$85.00; sold recorded 2022-05-09: US$149.60; no sale recorded 2022-05-14: US$254.40; sold recorded 2022-05-25: US$668.04; no sale recorded 2022-06-01: US$160.19; no sale recorded 2022-06-03: US$285.75; no sale recorded 2022-06-09: US$141.29; no sale recorded 2022-06-09: US$128.70; no sale recorded 2022-06-13: US$163.67; no sale recorded 2022-06-13: US$183.04; no sale recorded 2022-06-13: US$172.00; no sale recorded 2022-07-11: US$172.08; no sale recorded 2022-07-11: US$172.12; no sale recorded 2022-07-11: US$172.05; no sale recorded 2022-07-12: US$256.40; no sale recorded 2022-07-12: US$256.49; no sale recorded 2022-07-23: US$172.09; no sale recorded 2022-07-30: US$176.34; no sale recorded 2022-08-01: US$150.00; no sale recorded 2022-08-10: US$170.98; no sale recorded 2022-08-17: US$617.56; no sale recorded 2022-08-18: US$285.75; no sale recorded 2022-08-25: US$176.47; no sale recorded 2022-09-02: US$270.00; sold recorded 2022-09-04: US$94.18; no sale recorded 2022-09-07: US$142.29; no sale recorded 2022-09-17: US$285.75; no sale recorded 2022-09-28: US$73.11; no sale recorded 2022-11-02: US$321.14; no sale recorded 2022-11-08: US$281.70; sold recorded 2022-11-25: US$170.66; sold recorded 2022-11-25: US$361.95; no sale recorded 2022-11-25: US$415.00; no sale recorded 2022-11-25: US$260.50; no sale recorded 2022-12-01: US$196.00; no sale recorded 2022-12-06: US$142.42; sold recorded 2022-12-20: US$172.20; no sale recorded 2023-01-16: US$166.15; no sale recorded 2023-01-23: US$126.50; no sale recorded 2023-01-25: US$655.92; no sale recorded 2023-01-30: US$413.40; no sale recorded 2023-01-30: US$656.20; no sale recorded 2023-01-31: US$654.95; no sale recorded 2023-02-01: US$659.57; no sale recorded 2023-02-03: US$256.66; no sale recorded 2023-02-03: US$657.13; no sale recorded 2023-02-08: US$171.06; no sale recorded 2023-02-11: US$618.00; no sale recorded 2023-02-14: US$170.68; no sale recorded 2023-02-15: US$347.89; no sale recorded 2023-02-22: US$469.00; no sale recorded 2023-02-23: US$177.25; no sale recorded 2023-02-28: US$252.00; no sale recorded 2023-03-17: US$285.75; no sale recorded 2023-03-21: US$257.18; no sale recorded 2023-03-27: US$285.75; no sale recorded 2023-03-29: US$260.01; no sale recorded 2023-04-12: US$269.00; no sale recorded 2023-04-16: US$285.75; no sale recorded 2023-04-20: US$270.00; sold recorded 2023-05-02: US$257.18; no sale recorded 2023-05-03: US$256.66; no sale recorded 2023-05-04: US$182.04; no sale recorded 2023-05-05: US$170.96; no sale recorded 2023-05-06: US$202.37; sold recorded 2023-05-19: US$355.90; no sale recorded 2023-05-29: US$255.00; no sale recorded 2023-05-30: US$360.13; sold recorded 2023-06-01: US$130.89; no sale recorded 2023-06-09: US$183.19; no sale recorded 2023-06-10: US$371.20; no sale recorded 2023-06-17: US$248.00; no sale recorded 2023-06-21: US$285.75; no sale recorded 2023-06-25: US$245.00; sold recorded 2023-07-06: US$152.10; no sale recorded 2023-07-28: US$252.00; no sale recorded 2023-08-04: US$171.19; no sale recorded 2023-08-04: US$171.01; no sale recorded 2023-08-05: US$171.71; no sale recorded 2023-08-06: US$48.08; no sale recorded 2023-08-20: US$177.26; no sale recorded 2023-08-20: US$445.00; sold recorded 2023-08-21: US$405.10; no sale recorded 2023-08-28: US$360.45; no sale recorded 2023-09-01: US$94.18; no sale recorded 2023-09-12: US$363.50; no sale recorded 2023-09-16: US$437.40; no sale recorded 2023-09-18: US$195.90; no sale recorded 2023-09-19: US$152.10; no sale recorded 2023-10-06: US$285.75; no sale recorded 2023-10-12: US$171.95; no sale recorded 2023-10-16: US$171.19; no sale recorded 2023-10-27: US$168.99; no sale recorded 2023-10-30: US$130.89; no sale recorded 2023-11-07: US$255.00; no sale recorded 2023-12-25: US$295.00; sold recorded 2023-12-25: US$147.00; sold recorded 2023-12-26: US$269.00; no sale recorded 2024-01-09: US$189.00; no sale recorded 2024-01-14: US$464.30; no sale recorded 2024-01-14: US$441.79; sold recorded 2024-01-14: US$899.00; no sale recorded 2024-01-25: US$75.00; sold recorded 2024-01-30: US$367.75; no sale recorded 2024-02-20: US$238.08; no sale recorded 2024-02-23: US$598.00; no sale recorded 2024-02-23: US$129.99; sold recorded 2024-02-26: US$269.00; sold recorded 2024-02-26: US$425.89; no sale recorded 2024-02-29: US$260.01; no sale recorded 2024-03-05: US$285.75; sold recorded 2024-03-05: US$285.75; sold recorded 2024-03-17: US$157.14; no sale recorded 2024-03-21: US$427.00; no sale recorded 2024-03-21: US$800.00; sold recorded 2024-03-29: US$160.75; no sale recorded 2024-04-02: US$342.81; no sale recorded 2024-04-02: US$156.00; no sale recorded 2024-04-09: US$256.40; sold recorded 2024-04-09: US$189.00; no sale recorded 2024-04-11: US$189.59; no sale recorded 2024-04-30: US$198.40; no sale recorded 2024-05-02: US$172.46; no sale recorded 2024-05-03: US$150.00; no sale recorded 2024-05-04: US$120.00; no sale recorded 2024-05-04: US$29.96; no sale recorded 2024-05-22: US$235.60; no sale recorded 2024-05-30: US$162.67; no sale recorded 2024-06-03: US$83.48; no sale recorded 2024-06-05: US$132.00; sold recorded 2024-06-10: US$93.24; no sale recorded 2024-06-17: US$52.00; no sale recorded 2024-07-01: US$165.23; no sale recorded 2024-07-05: US$142.41; no sale recorded 2024-07-12: US$249.99; no sale recorded 2024-07-18: US$140.00; no sale recorded 2024-07-18: US$140.00; no sale recorded 2024-07-30: US$399.99; no sale recorded 2024-08-21: US$195.00; no sale recorded 2024-08-22: US$193.33; no sale recorded 2024-08-22: US$188.00; no sale recorded 2024-08-22: US$158.00; sold recorded 2024-08-26: US$155.85; no sale recorded 2024-08-26: US$156.25; sold recorded 2024-08-26: US$156.68; sold recorded 2024-08-30: US$156.72; no sale recorded 2024-09-04: US$77.14; no sale recorded 2024-09-18: US$155.40; no sale recorded 2024-09-19: US$188.37; no sale recorded 2024-09-19: US$188.34; sold recorded 2024-09-19: US$188.47; no sale recorded 2024-09-19: US$198.28; no sale recorded 2024-09-19: US$197.28; no sale recorded 2024-10-02: US$133.35; sold recorded 2024-10-11: US$206.33; no sale recorded 2024-10-12: US$152.38; sold recorded 2024-10-25: US$598.00; sold recorded 2024-10-29: US$209.99; sold recorded 2024-11-01: US$198.18; no sale recorded 2024-11-01: US$198.19; no sale recorded 2024-11-03: US$227.98; no sale recorded 2024-11-12: US$355.97; sold recorded 2024-11-19: US$209.99; sold recorded 2024-11-30: US$125.00; no sale recorded 2024-12-06: US$155.78; no sale recorded 2024-12-12: US$200.71; sold recorded 2024-12-12: US$385.00; no sale recorded 2024-12-21: US$110.00; no sale recorded 2024-12-26: US$89.00; no sale recorded 2024-12-27: US$207.77; sold recorded 2025-01-02: US$209.99; sold recorded 2025-01-07: US$209.99; sold recorded 2025-01-09: US$157.00; no sale recorded 2025-01-14: US$185.50; sold recorded 2025-01-20: US$370.00; no sale recorded 2025-01-24: US$580.00; sold recorded 2025-01-24: US$235.18; sold recorded 2025-02-02: US$246.94; sold recorded 2025-02-03: US$208.99; sold recorded 2025-02-06: US$86.60; sold recorded 2025-02-11: US$305.99; sold recorded 2025-02-14: US$209.99; sold recorded 2025-02-16: US$134.43; sold recorded 2025-02-17: US$157.35; no sale recorded 2025-02-22: US$188.27; no sale recorded 2025-02-26: US$150.95; sold recorded 2025-03-04: US$165.20; sold recorded 2025-03-04: US$125.63; sold recorded 2025-03-07: US$209.99; sold recorded 2025-03-08: US$90.22; sold recorded 2025-03-11: US$228.29; no sale recorded 2025-03-12: US$137.96; no sale recorded 2025-03-13: US$209.99; sold recorded 2025-03-16: US$208.99; sold recorded 2025-03-20: US$187.40; no sale recorded 2025-03-24: US$168.99; no sale recorded 2025-03-25: US$156.99; no sale recorded 2025-03-29: US$141.47; no sale recorded 2025-03-31: US$114.88; no sale recorded 2025-04-03: US$209.99; sold recorded 2025-04-14: US$89.00; no sale recorded 2025-04-17: US$209.99; sold recorded 2025-04-18: US$195.80; no sale recorded 2025-04-20: US$208.99; no sale recorded 2025-04-22: US$173.04; no sale recorded 2025-04-24: US$148.91; sold recorded 2025-04-30: US$188.00; no sale recorded 2025-05-13: US$145.78; no sale recorded 2025-05-13: US$154.58; no sale recorded 2025-05-14: US$171.37; no sale recorded 2025-05-15: US$79.99; no sale recorded 2025-05-15: US$230.99; no sale recorded 2025-05-20: US$370.00; no sale recorded 2025-05-22: US$163.85; no sale recorded 2025-05-23: US$2779.99; no sale recorded 2025-05-26: US$209.99; no sale recorded 2025-05-27: US$152.50; no sale recorded 2025-05-28: US$209.99; no sale recorded 2025-05-28: US$148.02; no sale recorded 2025-05-30: US$208.99; no sale recorded 2025-06-04: US$153.80; no sale recorded 2025-06-05: US$209.99; no sale recorded 2025-06-10: US$254.66; no sale recorded 2025-06-12: US$92.58; no sale recorded 2025-06-12: US$92.58; no sale recorded 2025-06-12: US$238.98; no sale recorded 2025-06-17: US$93.67; no sale recorded 2025-06-18: US$188.36; no sale recorded 2025-06-18: US$197.27; no sale recorded 2025-06-18: US$188.46; no sale recorded 2025-06-18: US$198.27; no sale recorded 2025-06-19: US$148.00; no sale recorded 2025-06-21: US$188.26; no sale recorded 2025-06-24: US$150.50; no sale recorded 2025-06-24: US$187.60; no sale recorded 2025-06-25: US$177.77; no sale recorded 2025-06-25: US$209.99; no sale recorded 2025-06-29: US$2664.45; no sale recorded 2025-07-09: US$209.99; no sale recorded 2025-07-11: US$145.50; no sale recorded 2025-07-11: US$145.90; no sale recorded 2025-07-14: US$148.00; no sale recorded 2025-07-15: US$488.00; no sale recorded 2025-07-16: US$208.99; no sale recorded 2025-07-26: US$165.00; no sale recorded 2025-07-30: US$209.99; no sale recorded 2025-08-06: US$79.00; no sale recorded 2025-08-10: US$230.70; no sale recorded 2025-08-20: US$209.98; no sale recorded 2025-08-21: US$209.98; no sale recorded 2025-08-21: US$152.48; no sale recorded 2025-08-25: US$273.98; no sale recorded 2025-08-26: US$198.21; no sale recorded 2025-08-26: US$198.24; no sale recorded 2025-08-26: US$198.26; no sale recorded 2025-08-26: US$198.23; no sale recorded 2025-08-31: US$208.99; no sale recorded 2025-09-01: US$133.09; no sale recorded 2025-09-10: US$223.98; no sale recorded 2025-09-10: US$263.98; no sale recorded 2025-09-10: US$2672.85; no sale recorded 2025-09-11: US$245.80; no sale recorded 2025-09-11: US$179.83; no sale recorded 2025-09-12: US$135.00; no sale recorded 2025-09-12: US$174.83; no sale recorded 2025-09-15: US$250.00; no sale recorded 2025-09-18: US$272.00; no sale recorded 2025-09-20: US$188.25; no sale recorded 2025-09-24: US$100.00; no sale recorded 2025-09-30: US$133.00; no sale recorded 2025-09-30: US$191.34; no sale recorded 2025-10-02: US$95.18; no sale recorded 2025-10-02: US$107.23; no sale recorded 2025-10-07: US$155.35; no sale recorded 2025-10-08: US$153.22; no sale recorded 2025-10-13: US$208.99; no sale recorded 2025-10-15: US$209.97; no sale recorded 2025-10-15: US$209.97; no sale recorded 2025-10-16: US$241.99; no sale recorded 2025-10-20: US$188.30; no sale recorded 2025-10-21: US$245.80; no sale recorded 2025-10-22: US$99.20; no sale recorded 2025-10-24: US$130.93; no sale recorded 2025-10-24: US$187.60; no sale recorded 2025-10-25: US$202.62; no sale recorded 2025-10-30: US$95.00; no sale recorded 2025-10-30: US$180.60; no sale recorded 2025-10-31: US$400.80; no sale recorded 2025-10-31: US$399.80; no sale recorded 2025-11-04: US$105.03; no sale recorded 2025-11-04: US$80.00; no sale recorded 2025-11-07: US$209.98; no sale recorded 2025-11-08: US$93.61; no sale recorded 2025-11-13: US$153.17; no sale recorded 2025-11-13: US$230.97; no sale recorded 2025-11-14: US$173.45; no sale recorded 2025-11-17: US$209.96; no sale recorded 2025-11-18: US$209.94; no sale recorded 2025-11-23: US$188.32; no sale recorded 2025-11-24: US$127.86; no sale recorded 2025-11-25: US$198.22; no sale recorded 2025-11-25: US$198.20; no sale recorded 2025-11-25: US$394.00; no sale recorded 2025-12-02: US$372.48; no sale recorded 2025-12-07: US$113.40; no sale recorded 2025-12-16: US$390.00; no sale recorded 2025-12-19: US$33.84; no sale recorded 2025-12-23: US$236.92; no sale recorded 2025-12-24: US$198.24; no sale recorded 2025-12-24: US$198.18; no sale recorded 2025-12-26: US$133.38; no sale recorded 2026-01-02: US$95.14; no sale recorded 2026-01-06: US$146.97; no sale recorded 2026-01-11: US$310.00; no sale recorded 2026-01-11: US$125.00; no sale recorded 2026-01-13: US$197.25; no sale recorded 2026-01-13: US$188.44; no sale recorded 2026-01-15: US$209.95; no sale recorded 2026-01-20: US$198.54; no sale recorded 2026-01-21: US$179.20; no sale recorded 2026-01-21: US$156.75; no sale recorded 2026-01-26: US$198.05; no sale recorded 2026-01-27: US$376.50; no sale recorded 2026-01-29: US$260.34; no sale recorded 2026-01-31: US$127.44; no sale recorded 2026-02-02: US$95.88; no sale recorded 2026-02-03: US$492.34; no sale recorded 2026-02-03: US$365.50; no sale recorded 2026-02-09: US$194.29; no sale recorded 2026-02-09: US$191.29; no sale recorded 2026-02-11: US$693.68; no sale recorded 2026-02-16: US$462.80; no sale recorded 2026-02-17: US$462.80; no sale recorded 2026-03-02: US$209.97; no sale recorded 2026-03-02: US$209.94; no sale recorded 2026-03-03: US$198.84; no sale recorded 2026-03-05: US$198.54; no sale recorded 2026-03-07: US$462.80; no sale recorded 2026-03-10: US$127.43; no sale recorded 2026-03-11: US$203.84; no sale recorded 2026-03-12: US$121.84; no sale recorded 2026-03-17: US$219.76; no sale recorded 2026-03-19: US$352.04; no sale recorded 2026-03-19: US$462.80; no sale recorded 2026-03-23: US$254.84; no sale recorded 2026-03-23: US$210.75; no sale recorded 2026-03-23: US$356.20; no sale recorded 2026-03-23: US$356.34; no sale recorded 2026-03-24: US$190.36; no sale recorded 2026-03-26: US$970.87; no sale recorded 2026-03-27: US$376.50; no sale recorded 2026-03-29: US$462.80; no sale recorded 2026-03-30: US$462.80; no sale recorded 2026-04-01: US$462.80; no sale recorded 2026-04-01: US$370.71; no sale recorded 2026-04-02: US$230.97; no sale recorded 2026-04-03: US$210.00; no sale recorded 2026-04-03: US$365.50; no sale recorded 2026-04-03: US$230.96; no sale recorded 2026-04-04: US$462.80; no sale recorded 2026-04-06: US$674.25; no sale recorded 2026-04-07: US$462.80; no sale recorded 2026-04-09: US$127.43; no sale recorded 2026-04-09: US$121.21; no sale recorded 2026-04-09: US$183.19; no sale recorded 2026-04-09: US$189.00; no sale recorded 2026-04-13: US$462.80; no sale recorded 2026-04-13: US$128.68; no sale recorded 2026-04-13: US$133.68; no sale recorded 2026-04-15: US$218.76; no sale recorded 2026-04-16: US$427.60; no sale recorded 2026-04-17: US$191.92; no sale recorded 2026-04-17: US$197.02; no sale recorded 2026-04-17: US$196.92; no sale recorded 2026-04-18: US$197.02; no sale recorded 2026-04-18: US$192.02; no sale recorded 2026-04-18: US$197.02; no sale recorded 2026-04-19: US$462.80; no sale recorded 2026-04-22: US$239.34; no sale recorded 2026-04-22: US$158.98; no sale recorded 2026-04-23: US$230.97; no sale recorded 2026-04-23: US$127.36; no sale recorded 2026-04-29: US$357.02; no sale recorded 2026-04-29: US$357.20; no sale recorded 2026-04-29: US$354.40; no sale recorded 2026-04-29: US$126.65; no sale recorded 2026-04-30: US$119.96; no sale recorded 2026-05-06: US$462.80; no sale recorded 2026-05-06: US$445.42; no sale recorded 2026-05-06: US$121.64; no sale recorded 2026-05-09: US$427.46; no sale recorded 2026-05-11: US$230.97; no sale recorded 2026-05-13: US$374.20; no sale recorded 2026-05-13: US$198.54; no sale recorded 2026-05-15: US$375.60; no sale recorded 2026-05-15: US$388.00; no sale recorded 2026-05-15: US$193.00; no sale recorded 2026-05-20: US$126.97; no sale recorded 2026-05-22: US$187.40; no sale recorded 2026-05-23: US$55.00; no sale recorded 2026-05-25: US$230.97; no sale recorded 2026-05-25: US$230.97; no sale recorded 2026-05-28: US$146.10; no sale recorded 2026-05-28: US$188.00; no sale recorded 2026-05-29: US$161.00; no sale recorded 2026-05-29: US$159.00; no sale recorded 2026-05-30: US$176.85; no sale recorded 2026-06-01: US$179.60; no sale recorded 2026-06-05: US$180.00; no sale recorded 2026-06-05: US$371.00; no sale recorded 2026-06-06: US$356.24; no sale recorded 2026-06-06: US$230.97; no sale recorded 2026-06-08: US$463.15; no sale recorded 2026-06-12: US$230.97; no sale recorded 2026-06-12: US$164.23; no sale recorded 2026-06-15: US$127.75; no sale recorded 2026-06-15: US$115.68; no sale recorded 2026-06-15: US$366.20; no sale recorded 2026-06-16: US$141.21; no sale recorded 2026-06-16: US$150.00; no sale recorded 2026-06-16: US$186.88; no sale recorded 2026-06-16: US$117.52; no sale recorded 2026-06-23: US$356.17; no sale recorded 2026-06-23: US$356.27; no sale recorded 2026-06-24: US$75.34; no sale recorded 2026-06-25: US$434.57; no sale recorded 2026-06-26: US$150.65; no sale recorded 2026-06-28: US$356.16; no sale recorded 2026-06-28: US$356.18; no sale recorded 2026-07-01: US$152.94; no sale recorded 2026-07-01: US$147.94; no sale recorded 2026-07-02: US$159.83; no sale recorded 2026-07-02: US$155.35; no sale recorded 2026-07-05: US$276.00; no sale recorded 2026-07-07: US$187.40; no sale recorded 2026-07-07: US$381.00; no sale recorded 2026-07-10: US$356.30; no sale recorded 2026-07-10: US$198.54; no sale recorded 2026-07-11: US$295.06; no sale recorded 2026-07-13: US$347.29; no sale recorded 2026-07-15: US$150.00; no sale recorded 2026-07-27: US$169.03; no sale recorded 2026-08-06: US$138.51; no sale recorded 2026-08-20: US$370.00; no sale recorded 2026-09-02: US$150.00; no sale recorded 2026-10-24: US$311.83; no sale recorded Sold recorded No sale recorded Monthly median
Logarithmic price scale (price + 1). Dates are listing starts.
Median recorded price, all years $194.29 505 plotted records from 505 US-dollar records in this range. Monthly medians use all records in each calendar month.