Recorded price history USD Listing start period All years 5 years 1 year
Recorded US-dollar price history Linear price scale. 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. 0.00 2000.00 4000.00 6000.00 8000.00 May 2020 Dec 2021 Jul 2023 Mar 2025 Oct 2026 2020-05-27: US$2363.77; no sale recorded 2020-06-08: US$1299.00; no sale recorded 2021-03-19: US$2464.20; no sale recorded 2021-04-22: US$2000.00; no sale recorded 2023-05-19: US$1798.00; no sale recorded 2023-08-08: US$1600.00; no sale recorded 2023-08-19: US$1598.60; no sale recorded 2023-08-19: US$1598.70; no sale recorded 2023-08-19: US$1598.80; no sale recorded 2023-08-19: US$1598.90; no sale recorded 2023-08-19: US$1598.50; no sale recorded 2023-08-19: US$1599.30; no sale recorded 2023-08-19: US$1599.50; no sale recorded 2023-08-19: US$1599.40; no sale recorded 2023-08-19: US$1599.60; no sale recorded 2023-08-19: US$1599.70; no sale recorded 2023-08-19: US$1599.90; no sale recorded 2023-08-19: US$1599.80; no sale recorded 2023-09-27: US$1308.00; no sale recorded 2024-01-14: US$1598.50; no sale recorded 2024-01-14: US$1222.23; no sale recorded 2024-01-14: US$1221.55; no sale recorded 2024-01-14: US$1598.60; no sale recorded 2024-01-14: US$1599.40; no sale recorded 2024-01-14: US$1599.60; no sale recorded 2024-01-14: US$1599.30; no sale recorded 2024-01-20: US$1798.00; no sale recorded 2024-02-22: US$1233.00; no sale recorded 2024-04-09: US$1138.24; sold recorded 2024-04-30: US$1510.00; no sale recorded 2024-05-21: US$1222.21; no sale recorded 2024-07-12: US$2958.67; no sale recorded 2024-07-29: US$1385.10; no sale recorded 2024-08-18: US$1662.14; no sale recorded 2024-09-01: US$1584.73; no sale recorded 2024-09-01: US$1311.17; no sale recorded 2024-09-01: US$1295.00; sold recorded 2024-09-08: US$4234.65; no sale recorded 2024-09-20: US$1594.52; no sale recorded 2024-09-30: US$1214.00; no sale recorded 2024-10-27: US$1587.44; no sale recorded 2024-10-27: US$75.00; sold recorded 2024-11-15: US$1449.87; no sale recorded 2024-11-17: US$1549.00; sold recorded 2024-12-01: US$812.00; no sale recorded 2024-12-06: US$1222.21; no sale recorded 2024-12-08: US$1222.17; no sale recorded 2024-12-08: US$1222.04; no sale recorded 2024-12-10: US$1578.00; sold recorded 2024-12-10: US$1221.99; no sale recorded 2024-12-11: US$1389.01; no sale recorded 2024-12-23: US$1162.25; no sale recorded 2024-12-27: US$1344.46; sold recorded 2024-12-29: US$1565.24; sold recorded 2025-01-01: US$1591.30; sold recorded 2025-01-05: US$1591.30; sold recorded 2025-01-13: US$1578.00; sold recorded 2025-01-20: US$1578.00; sold recorded 2025-01-28: US$1579.49; sold recorded 2025-02-04: US$1578.00; sold recorded 2025-02-11: US$1520.00; no sale recorded 2025-02-14: US$1591.30; sold recorded 2025-02-20: US$1221.00; no sale recorded 2025-02-21: US$116.00; no sale recorded 2025-02-26: US$1588.00; no sale recorded 2025-02-27: US$1573.04; sold recorded 2025-03-06: US$1241.37; no sale recorded 2025-03-07: US$1591.30; sold recorded 2025-03-11: US$2310.78; no sale recorded 2025-03-12: US$1198.15; no sale recorded 2025-03-13: US$1430.07; no sale recorded 2025-03-20: US$1210.00; no sale recorded 2025-03-25: US$1578.00; no sale recorded 2025-03-26: US$1578.00; sold recorded 2025-03-27: US$1342.19; sold recorded 2025-03-28: US$1476.31; no sale recorded 2025-03-29: US$1619.54; sold recorded 2025-03-31: US$1578.00; sold recorded 2025-04-02: US$1173.51; sold recorded 2025-04-08: US$1404.33; no sale recorded 2025-04-09: US$1575.00; no sale recorded 2025-04-14: US$1592.00; no sale recorded 2025-04-14: US$1069.30; sold recorded 2025-04-18: US$1591.30; sold recorded 2025-04-26: US$1578.00; no sale recorded 2025-04-26: US$1538.00; no sale recorded 2025-04-26: US$1568.00; no sale recorded 2025-04-29: US$1613.00; sold recorded 2025-05-02: US$1237.14; no sale recorded 2025-05-04: US$2057.38; no sale recorded 2025-05-06: US$1348.80; no sale recorded 2025-05-15: US$1750.43; no sale recorded 2025-05-15: US$1750.43; no sale recorded 2025-05-24: US$1585.00; no sale recorded 2025-05-28: US$1703.39; no sale recorded 2025-06-02: US$1591.30; no sale recorded 2025-06-03: US$1550.67; no sale recorded 2025-06-05: US$432.00; no sale recorded 2025-06-07: US$1626.69; no sale recorded 2025-06-12: US$1435.81; no sale recorded 2025-06-23: US$1538.73; no sale recorded 2025-06-25: US$1591.30; no sale recorded 2025-06-26: US$1552.23; no sale recorded 2025-07-02: US$1580.00; no sale recorded 2025-07-02: US$1521.13; no sale recorded 2025-07-03: US$563.41; no sale recorded 2025-07-03: US$1460.28; no sale recorded 2025-07-04: US$1128.16; no sale recorded 2025-07-08: US$1221.99; no sale recorded 2025-07-09: US$1876.53; no sale recorded 2025-07-09: US$1591.30; no sale recorded 2025-07-10: US$1427.75; no sale recorded 2025-07-22: US$1502.76; no sale recorded 2025-07-23: US$1615.00; no sale recorded 2025-07-24: US$1680.87; no sale recorded 2025-07-28: US$1591.30; no sale recorded 2025-07-30: US$1591.30; no sale recorded 2025-07-31: US$1680.88; no sale recorded 2025-08-01: US$1680.88; no sale recorded 2025-08-02: US$2155.00; no sale recorded 2025-08-04: US$1585.00; no sale recorded 2025-08-05: US$1406.62; no sale recorded 2025-08-12: US$1351.93; no sale recorded 2025-08-15: US$1615.00; no sale recorded 2025-08-19: US$1220.30; no sale recorded 2025-08-20: US$1466.44; no sale recorded 2025-08-20: US$1470.81; no sale recorded 2025-08-20: US$1480.81; no sale recorded 2025-08-21: US$1451.98; no sale recorded 2025-08-31: US$1222.21; no sale recorded 2025-08-31: US$1222.18; no sale recorded 2025-09-01: US$1815.35; no sale recorded 2025-09-01: US$1615.00; no sale recorded 2025-09-03: US$1495.24; no sale recorded 2025-09-04: US$700.00; no sale recorded 2025-09-05: US$1486.18; no sale recorded 2025-09-07: US$1754.54; no sale recorded 2025-09-16: US$1976.17; no sale recorded 2025-09-19: US$1222.22; no sale recorded 2025-09-19: US$1222.27; no sale recorded 2025-09-19: US$1222.26; no sale recorded 2025-09-20: US$1222.24; no sale recorded 2025-09-22: US$1214.21; no sale recorded 2025-09-30: US$1466.69; no sale recorded 2025-09-30: US$1324.33; no sale recorded 2025-10-02: US$2205.60; no sale recorded 2025-10-11: US$1735.19; no sale recorded 2025-10-13: US$2291.47; no sale recorded 2025-10-14: US$1477.88; no sale recorded 2025-10-14: US$1566.96; no sale recorded 2025-10-14: US$1526.25; no sale recorded 2025-10-17: US$1222.30; no sale recorded 2025-10-27: US$1515.88; no sale recorded 2025-10-28: US$1489.86; no sale recorded 2025-10-30: US$1538.61; no sale recorded 2025-11-05: US$1263.36; no sale recorded 2025-11-06: US$1119.61; no sale recorded 2025-11-07: US$1550.67; no sale recorded 2025-11-07: US$1591.29; no sale recorded 2025-11-10: US$1734.14; no sale recorded 2025-11-13: US$1355.31; no sale recorded 2025-11-17: US$1591.29; no sale recorded 2025-11-17: US$1591.28; no sale recorded 2025-11-18: US$1349.33; no sale recorded 2025-11-19: US$1591.25; no sale recorded 2025-11-19: US$1591.27; no sale recorded 2025-11-19: US$1220.65; no sale recorded 2025-11-19: US$1210.56; no sale recorded 2025-11-20: US$1442.22; no sale recorded 2025-11-21: US$1463.10; no sale recorded 2025-11-21: US$1503.30; no sale recorded 2025-12-03: US$1286.54; no sale recorded 2025-12-05: US$1221.15; no sale recorded 2025-12-06: US$1342.93; no sale recorded 2025-12-08: US$1585.00; no sale recorded 2025-12-09: US$1920.09; no sale recorded 2025-12-16: US$1615.00; no sale recorded 2025-12-16: US$1202.42; no sale recorded 2025-12-18: US$1483.14; no sale recorded 2025-12-19: US$1454.41; no sale recorded 2025-12-30: US$1222.17; no sale recorded 2026-01-02: US$1465.20; no sale recorded 2026-01-06: US$1364.93; no sale recorded 2026-01-08: US$1927.85; no sale recorded 2026-01-12: US$1585.00; no sale recorded 2026-01-16: US$1222.20; no sale recorded 2026-01-24: US$1222.20; no sale recorded 2026-01-27: US$1221.96; no sale recorded 2026-01-27: US$1222.14; no sale recorded 2026-01-27: US$1307.54; no sale recorded 2026-01-28: US$1466.56; no sale recorded 2026-01-29: US$1275.00; no sale recorded 2026-02-07: US$1455.90; no sale recorded 2026-02-10: US$1404.12; no sale recorded 2026-02-12: US$1450.23; no sale recorded 2026-02-12: US$1419.31; no sale recorded 2026-02-12: US$1463.44; no sale recorded 2026-03-02: US$1591.26; no sale recorded 2026-03-02: US$1591.28; no sale recorded 2026-03-05: US$1811.25; no sale recorded 2026-03-05: US$1615.00; no sale recorded 2026-03-14: US$1893.53; no sale recorded 2026-03-24: US$1791.54; no sale recorded 2026-03-28: US$1965.81; no sale recorded 2026-04-01: US$1222.16; no sale recorded 2026-04-06: US$1591.27; no sale recorded 2026-04-10: US$1512.21; no sale recorded 2026-04-14: US$1927.85; no sale recorded 2026-04-23: US$1591.28; no sale recorded 2026-04-29: US$1640.40; no sale recorded 2026-05-01: US$1272.93; no sale recorded 2026-05-11: US$1591.28; no sale recorded 2026-05-13: US$1466.62; no sale recorded 2026-05-25: US$1591.28; no sale recorded 2026-05-25: US$1591.28; no sale recorded 2026-05-30: US$1222.01; no sale recorded 2026-06-02: US$1491.01; no sale recorded 2026-06-06: US$1221.99; no sale recorded 2026-06-08: US$1214.17; no sale recorded 2026-06-08: US$1615.00; no sale recorded 2026-06-09: US$1552.10; no sale recorded 2026-06-12: US$1591.28; no sale recorded 2026-06-15: US$1539.87; no sale recorded 2026-06-19: US$1787.91; no sale recorded 2026-06-24: US$1222.02; no sale recorded 2026-06-24: US$1451.06; no sale recorded 2026-07-02: US$1220.66; no sale recorded 2026-07-06: US$1476.06; no sale recorded 2026-07-13: US$1331.26; no sale recorded 2026-07-13: US$1222.08; no sale recorded 2026-07-13: US$1591.28; no sale recorded 2026-08-24: US$1591.28; no sale recorded 2026-09-01: US$1475.62; no sale recorded 2026-09-02: US$1591.28; no sale recorded 2026-09-28: US$1222.15; no sale recorded 2026-10-24: US$1846.83; no sale recorded Recorded US-dollar price history Linear price scale. 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. 0.00 2000.00 4000.00 6000.00 8000.00 May 2020 Jul 2023 Oct 2026 2020-05-27: US$2363.77; no sale recorded 2020-06-08: US$1299.00; no sale recorded 2021-03-19: US$2464.20; no sale recorded 2021-04-22: US$2000.00; no sale recorded 2023-05-19: US$1798.00; no sale recorded 2023-08-08: US$1600.00; no sale recorded 2023-08-19: US$1598.60; no sale recorded 2023-08-19: US$1598.70; no sale recorded 2023-08-19: US$1598.80; no sale recorded 2023-08-19: US$1598.90; no sale recorded 2023-08-19: US$1598.50; no sale recorded 2023-08-19: US$1599.30; no sale recorded 2023-08-19: US$1599.50; no sale recorded 2023-08-19: US$1599.40; no sale recorded 2023-08-19: US$1599.60; no sale recorded 2023-08-19: US$1599.70; no sale recorded 2023-08-19: US$1599.90; no sale recorded 2023-08-19: US$1599.80; no sale recorded 2023-09-27: US$1308.00; no sale recorded 2024-01-14: US$1598.50; no sale recorded 2024-01-14: US$1222.23; no sale recorded 2024-01-14: US$1221.55; no sale recorded 2024-01-14: US$1598.60; no sale recorded 2024-01-14: US$1599.40; no sale recorded 2024-01-14: US$1599.60; no sale recorded 2024-01-14: US$1599.30; no sale recorded 2024-01-20: US$1798.00; no sale recorded 2024-02-22: US$1233.00; no sale recorded 2024-04-09: US$1138.24; sold recorded 2024-04-30: US$1510.00; no sale recorded 2024-05-21: US$1222.21; no sale recorded 2024-07-12: US$2958.67; no sale recorded 2024-07-29: US$1385.10; no sale recorded 2024-08-18: US$1662.14; no sale recorded 2024-09-01: US$1584.73; no sale recorded 2024-09-01: US$1311.17; no sale recorded 2024-09-01: US$1295.00; sold recorded 2024-09-08: US$4234.65; no sale recorded 2024-09-20: US$1594.52; no sale recorded 2024-09-30: US$1214.00; no sale recorded 2024-10-27: US$1587.44; no sale recorded 2024-10-27: US$75.00; sold recorded 2024-11-15: US$1449.87; no sale recorded 2024-11-17: US$1549.00; sold recorded 2024-12-01: US$812.00; no sale recorded 2024-12-06: US$1222.21; no sale recorded 2024-12-08: US$1222.17; no sale recorded 2024-12-08: US$1222.04; no sale recorded 2024-12-10: US$1578.00; sold recorded 2024-12-10: US$1221.99; no sale recorded 2024-12-11: US$1389.01; no sale recorded 2024-12-23: US$1162.25; no sale recorded 2024-12-27: US$1344.46; sold recorded 2024-12-29: US$1565.24; sold recorded 2025-01-01: US$1591.30; sold recorded 2025-01-05: US$1591.30; sold recorded 2025-01-13: US$1578.00; sold recorded 2025-01-20: US$1578.00; sold recorded 2025-01-28: US$1579.49; sold recorded 2025-02-04: US$1578.00; sold recorded 2025-02-11: US$1520.00; no sale recorded 2025-02-14: US$1591.30; sold recorded 2025-02-20: US$1221.00; no sale recorded 2025-02-21: US$116.00; no sale recorded 2025-02-26: US$1588.00; no sale recorded 2025-02-27: US$1573.04; sold recorded 2025-03-06: US$1241.37; no sale recorded 2025-03-07: US$1591.30; sold recorded 2025-03-11: US$2310.78; no sale recorded 2025-03-12: US$1198.15; no sale recorded 2025-03-13: US$1430.07; no sale recorded 2025-03-20: US$1210.00; no sale recorded 2025-03-25: US$1578.00; no sale recorded 2025-03-26: US$1578.00; sold recorded 2025-03-27: US$1342.19; sold recorded 2025-03-28: US$1476.31; no sale recorded 2025-03-29: US$1619.54; sold recorded 2025-03-31: US$1578.00; sold recorded 2025-04-02: US$1173.51; sold recorded 2025-04-08: US$1404.33; no sale recorded 2025-04-09: US$1575.00; no sale recorded 2025-04-14: US$1592.00; no sale recorded 2025-04-14: US$1069.30; sold recorded 2025-04-18: US$1591.30; sold recorded 2025-04-26: US$1578.00; no sale recorded 2025-04-26: US$1538.00; no sale recorded 2025-04-26: US$1568.00; no sale recorded 2025-04-29: US$1613.00; sold recorded 2025-05-02: US$1237.14; no sale recorded 2025-05-04: US$2057.38; no sale recorded 2025-05-06: US$1348.80; no sale recorded 2025-05-15: US$1750.43; no sale recorded 2025-05-15: US$1750.43; no sale recorded 2025-05-24: US$1585.00; no sale recorded 2025-05-28: US$1703.39; no sale recorded 2025-06-02: US$1591.30; no sale recorded 2025-06-03: US$1550.67; no sale recorded 2025-06-05: US$432.00; no sale recorded 2025-06-07: US$1626.69; no sale recorded 2025-06-12: US$1435.81; no sale recorded 2025-06-23: US$1538.73; no sale recorded 2025-06-25: US$1591.30; no sale recorded 2025-06-26: US$1552.23; no sale recorded 2025-07-02: US$1580.00; no sale recorded 2025-07-02: US$1521.13; no sale recorded 2025-07-03: US$563.41; no sale recorded 2025-07-03: US$1460.28; no sale recorded 2025-07-04: US$1128.16; no sale recorded 2025-07-08: US$1221.99; no sale recorded 2025-07-09: US$1876.53; no sale recorded 2025-07-09: US$1591.30; no sale recorded 2025-07-10: US$1427.75; no sale recorded 2025-07-22: US$1502.76; no sale recorded 2025-07-23: US$1615.00; no sale recorded 2025-07-24: US$1680.87; no sale recorded 2025-07-28: US$1591.30; no sale recorded 2025-07-30: US$1591.30; no sale recorded 2025-07-31: US$1680.88; no sale recorded 2025-08-01: US$1680.88; no sale recorded 2025-08-02: US$2155.00; no sale recorded 2025-08-04: US$1585.00; no sale recorded 2025-08-05: US$1406.62; no sale recorded 2025-08-12: US$1351.93; no sale recorded 2025-08-15: US$1615.00; no sale recorded 2025-08-19: US$1220.30; no sale recorded 2025-08-20: US$1466.44; no sale recorded 2025-08-20: US$1470.81; no sale recorded 2025-08-20: US$1480.81; no sale recorded 2025-08-21: US$1451.98; no sale recorded 2025-08-31: US$1222.21; no sale recorded 2025-08-31: US$1222.18; no sale recorded 2025-09-01: US$1815.35; no sale recorded 2025-09-01: US$1615.00; no sale recorded 2025-09-03: US$1495.24; no sale recorded 2025-09-04: US$700.00; no sale recorded 2025-09-05: US$1486.18; no sale recorded 2025-09-07: US$1754.54; no sale recorded 2025-09-16: US$1976.17; no sale recorded 2025-09-19: US$1222.22; no sale recorded 2025-09-19: US$1222.27; no sale recorded 2025-09-19: US$1222.26; no sale recorded 2025-09-20: US$1222.24; no sale recorded 2025-09-22: US$1214.21; no sale recorded 2025-09-30: US$1466.69; no sale recorded 2025-09-30: US$1324.33; no sale recorded 2025-10-02: US$2205.60; no sale recorded 2025-10-11: US$1735.19; no sale recorded 2025-10-13: US$2291.47; no sale recorded 2025-10-14: US$1477.88; no sale recorded 2025-10-14: US$1566.96; no sale recorded 2025-10-14: US$1526.25; no sale recorded 2025-10-17: US$1222.30; no sale recorded 2025-10-27: US$1515.88; no sale recorded 2025-10-28: US$1489.86; no sale recorded 2025-10-30: US$1538.61; no sale recorded 2025-11-05: US$1263.36; no sale recorded 2025-11-06: US$1119.61; no sale recorded 2025-11-07: US$1550.67; no sale recorded 2025-11-07: US$1591.29; no sale recorded 2025-11-10: US$1734.14; no sale recorded 2025-11-13: US$1355.31; no sale recorded 2025-11-17: US$1591.29; no sale recorded 2025-11-17: US$1591.28; no sale recorded 2025-11-18: US$1349.33; no sale recorded 2025-11-19: US$1591.25; no sale recorded 2025-11-19: US$1591.27; no sale recorded 2025-11-19: US$1220.65; no sale recorded 2025-11-19: US$1210.56; no sale recorded 2025-11-20: US$1442.22; no sale recorded 2025-11-21: US$1463.10; no sale recorded 2025-11-21: US$1503.30; no sale recorded 2025-12-03: US$1286.54; no sale recorded 2025-12-05: US$1221.15; no sale recorded 2025-12-06: US$1342.93; no sale recorded 2025-12-08: US$1585.00; no sale recorded 2025-12-09: US$1920.09; no sale recorded 2025-12-16: US$1615.00; no sale recorded 2025-12-16: US$1202.42; no sale recorded 2025-12-18: US$1483.14; no sale recorded 2025-12-19: US$1454.41; no sale recorded 2025-12-30: US$1222.17; no sale recorded 2026-01-02: US$1465.20; no sale recorded 2026-01-06: US$1364.93; no sale recorded 2026-01-08: US$1927.85; no sale recorded 2026-01-12: US$1585.00; no sale recorded 2026-01-16: US$1222.20; no sale recorded 2026-01-24: US$1222.20; no sale recorded 2026-01-27: US$1221.96; no sale recorded 2026-01-27: US$1222.14; no sale recorded 2026-01-27: US$1307.54; no sale recorded 2026-01-28: US$1466.56; no sale recorded 2026-01-29: US$1275.00; no sale recorded 2026-02-07: US$1455.90; no sale recorded 2026-02-10: US$1404.12; no sale recorded 2026-02-12: US$1450.23; no sale recorded 2026-02-12: US$1419.31; no sale recorded 2026-02-12: US$1463.44; no sale recorded 2026-03-02: US$1591.26; no sale recorded 2026-03-02: US$1591.28; no sale recorded 2026-03-05: US$1811.25; no sale recorded 2026-03-05: US$1615.00; no sale recorded 2026-03-14: US$1893.53; no sale recorded 2026-03-24: US$1791.54; no sale recorded 2026-03-28: US$1965.81; no sale recorded 2026-04-01: US$1222.16; no sale recorded 2026-04-06: US$1591.27; no sale recorded 2026-04-10: US$1512.21; no sale recorded 2026-04-14: US$1927.85; no sale recorded 2026-04-23: US$1591.28; no sale recorded 2026-04-29: US$1640.40; no sale recorded 2026-05-01: US$1272.93; no sale recorded 2026-05-11: US$1591.28; no sale recorded 2026-05-13: US$1466.62; no sale recorded 2026-05-25: US$1591.28; no sale recorded 2026-05-25: US$1591.28; no sale recorded 2026-05-30: US$1222.01; no sale recorded 2026-06-02: US$1491.01; no sale recorded 2026-06-06: US$1221.99; no sale recorded 2026-06-08: US$1214.17; no sale recorded 2026-06-08: US$1615.00; no sale recorded 2026-06-09: US$1552.10; no sale recorded 2026-06-12: US$1591.28; no sale recorded 2026-06-15: US$1539.87; no sale recorded 2026-06-19: US$1787.91; no sale recorded 2026-06-24: US$1222.02; no sale recorded 2026-06-24: US$1451.06; no sale recorded 2026-07-02: US$1220.66; no sale recorded 2026-07-06: US$1476.06; no sale recorded 2026-07-13: US$1331.26; no sale recorded 2026-07-13: US$1222.08; no sale recorded 2026-07-13: US$1591.28; no sale recorded 2026-08-24: US$1591.28; no sale recorded 2026-09-01: US$1475.62; no sale recorded 2026-09-02: US$1591.28; no sale recorded 2026-09-28: US$1222.15; no sale recorded 2026-10-24: US$1846.83; no sale recorded Sold recorded No sale recorded Monthly median
Linear price scale. Dates are listing starts.
Median recorded price, all years $1539.30 236 plotted records from 236 US-dollar records in this range. Monthly medians use all records in each calendar month.