Southwestern USA Drought Index Reconstruction --------------------------------------------------------------------- World Data Center for Paleoclimatology, Boulder and NOAA Paleoclimatology Program --------------------------------------------------------------------- NOTE: PLEASE CITE ORIGINAL REFERENCES WHEN USING THIS DATA!!!!! CONTRIBUTOR: Cook, E.R. NAME OF DATA SET: Southwestern USA Drought Index Reconstruction IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2000-053. SUGGESTED DATA CITATION: Cook, E.R., 2000, Southwestern USA Drought Index Reconstruction. International Tree-Ring Data Bank. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series #2000-053. NOAA/NGDC Paleoclimatology Program, Boulder CO, USA. ORIGINAL REFERENCE: Unpublished data. LAST UPDATE: 3/2003 (Addition of mean PDSI data) GEOGRAPHIC REGION: Southwestern USA PERIOD OF RECORD: 1200-1978 AD DESCRIPTION: Tree Ring reconstruction of Southwestern USA drought scores, based on optimal interpolation. The reconstruction uses factor scores from a Principal Components Analysis (PCA) of time t and selected t-1 and t+1 lags of 14 tree-ring chronologies from northern Mexico (Durango and Chihuahua) and the southwestern U.S.A. (Arizona, Utah and New Mexico) plus the first two factor scores from a network of 9 chronologies in OK and TX as independent variables. All chronologies were compiled from indices of tree growth (earlywood or total ring width) detrended to remove biological trends (Cook 1985). Values are factor scores from a rotated EOF analysis, expressed as standard deviations from the mean. DATA: SWD Scores: southwest drought scores based on optimal interpolation PDSI: Mean Palmer Drought Severity Index for the SWD Correlation between the two series is 0.95. YEAR SCORES PDSI 1200 1.1139 2.177 1201 1.7279 2.555 1202 0.9109 1.72 1203 0.5599 0.801 1204 -0.7481 -1.463 1205 -0.3921 -0.891 1206 -0.7381 -1.39 1207 0.0299 -0.247 1208 -0.5721 -1.062 1209 0.7949 1.553 1210 1.8679 2.44 1211 2.1169 2.938 1212 0.7539 1.474 1213 0.3599 0.19 1214 -0.6811 -1.428 1215 -1.0221 -2.702 1216 -0.3621 -1.065 1217 -1.7231 -3.97 1218 -1.5421 -2.883 1219 -0.1921 -0.213 1220 -0.4481 -1.042 1221 -0.6201 -1.72 1222 0.3629 0.203 1223 0.6219 0.474 1224 -0.2141 -0.105 1225 -0.5921 -1.117 1226 -0.0231 0.089 1227 -1.1481 -3.281 1228 0.1819 0.679 1229 0.5329 0.695 1230 0.9409 0.857 1231 0.9289 1.173 1232 0.6019 1.06 1233 -0.5571 -1.238 1234 -1.4441 -2.312 1235 -0.1751 -0.291 1236 -0.9451 -2.092 1237 0.4419 0.624 1238 0.8259 1.863 1239 0.6659 1.045 1240 -0.7511 -1.286 1241 1.0569 1.281 1242 1.1219 1.385 1243 0.3899 0.578 1244 0.5239 0.917 1245 -0.2821 -0.987 1246 -0.8651 -2.056 1247 -0.3641 -1.439 1248 0.2929 -0.027 1249 1.1019 1.632 1250 -0.6471 -1.259 1251 -2.0171 -3.786 1252 -1.2441 -2.45 1253 -0.1451 -0.796 1254 -2.2961 -4.133 1255 -0.3161 -0.843 1256 -0.6281 -1.384 1257 -0.2981 -0.974 1258 -1.7361 -3.066 1259 0.0029 0.009 1260 -0.4461 -0.79 1261 -0.6391 -1.008 1262 0.2369 0.578 1263 0.1199 -0.181 1264 0.2989 -0.318 1265 0.9559 1.112 1266 -0.0921 -0.203 1267 0.5109 0.458 1268 1.6179 2.31 1269 0.9429 0.407 1270 0.4149 -0.129 1271 0.6499 0.491 1272 0.3059 -0.269 1273 -1.2121 -2.021 1274 -1.3201 -2.221 1275 0.6029 0.726 1276 -1.1741 -2.093 1277 -0.2791 -0.212 1278 -1.1621 -1.833 1279 -0.3151 -0.894 1280 -1.5651 -2.4 1281 -0.9991 -1.336 1282 -0.7701 -1.429 1283 -1.1441 -1.997 1284 -0.1661 -0.721 1285 -0.8571 -1.444 1286 -1.3221 -2.648 1287 -0.8591 -1.44 1288 -1.2871 -3.241 1289 -0.2821 -0.912 1290 0.3929 0.613 1291 -0.7141 -1.211 1292 -0.1081 -0.755 1293 0.1249 -0.291 1294 -0.2041 -0.735 1295 -1.6331 -2.609 1296 -0.3401 -1.206 1297 -0.6501 -1.143 1298 1.1049 1.49 1299 -0.2491 -0.383 1300 0.3449 0.346 1301 1.3339 1.69 1302 1.4379 1.76 1303 0.8049 0.822 1304 0.2719 -0.225 1305 1.7369 2.616 1306 1.0769 1.514 1307 0.0989 -0.388 1308 -0.4831 -0.931 1309 1.3139 1.709 1310 2.2119 3.018 1311 1.2429 1.76 1312 1.0509 1.295 1313 2.6799 3.937 1314 1.3609 1.799 1315 -0.2341 -1.016 1316 -1.8051 -3.714 1317 0.3049 -0.1 1318 -0.3481 -0.515 1319 0.5269 0.4 1320 1.4319 1.324 1321 0.9789 1.663 1322 0.6399 0.408 1323 -0.5371 -1.15 1324 -0.3321 -1.117 1325 2.4259 2.666 1326 1.8399 2.074 1327 1.1619 0.895 1328 0.4129 -0.621 1329 0.3099 -0.397 1330 0.6459 1.044 1331 1.2039 1.79 1332 1.1249 2.094 1333 1.9129 2.489 1334 1.3799 1.531 1335 -0.1201 -1.242 1336 0.5129 0.63 1337 0.8689 1.143 1338 -2.0231 -2.877 1339 -0.8691 -0.897 1340 -1.0631 -1.353 1341 -1.4521 -1.584 1342 -1.1871 -1.262 1343 -1.2161 -1.031 1344 -1.0711 -1.057 1345 -0.4621 -0.251 1346 0.0619 0.104 1347 -1.6281 -2.74 1348 -0.8591 -1.438 1349 -0.6341 -0.505 1350 -1.6821 -2.744 1351 -0.8741 -1.887 1352 -1.1081 -2.133 1353 1.2729 1.092 1354 1.0919 1.35 1355 -0.4861 -1.435 1356 0.7919 0.932 1357 0.8169 0.694 1358 1.9399 2.057 1359 1.5409 1.412 1360 -0.4641 -1.989 1361 -0.1921 -1.157 1362 -0.1441 -1.018 1363 -1.2281 -2.879 1364 -0.8721 -2.029 1365 0.2729 -1.084 1366 0.4569 0.45 1367 -0.3891 -0.965 1368 1.4639 1.289 1369 0.0559 -1.155 1370 1.5969 1.551 1371 0.7869 0.088 1372 1.5129 0.728 1373 0.7979 1.052 1374 1.9789 2.105 1375 0.1149 -0.428 1376 -1.0491 -2.228 1377 0.0179 -0.555 1378 0.3959 0.032 1379 -0.1471 -1.16 1380 1.5589 2.216 1381 0.7979 0.723 1382 0.2029 -0.129 1383 1.4619 1.434 1384 0.1099 -0.138 1385 0.8369 0.789 1386 0.9429 1.353 1387 0.1079 -0.152 1388 0.3359 -0.095 1389 -0.6181 -1.487 1390 -1.3971 -2.378 1391 -0.9051 -1.55 1392 -0.0471 -0.084 1393 -0.6011 -0.885 1394 0.4659 1.078 1395 0.6279 -0.028 1396 0.2219 0.042 1397 -0.8411 -1.513 1398 -0.3691 -1.261 1399 -1.8011 -2.654 1400 -1.2591 -1.951 1401 -0.8371 -1.377 1402 -1.0191 -1.377 1403 -1.4851 -1.694 1404 0.2549 0.395 1405 -1.1571 -0.646 1406 0.7879 0.47 1407 -0.7971 -2.038 1408 -0.0791 -0.392 1409 0.9449 1 1410 0.8699 -0.096 1411 0.2329 -1.071 1412 1.4319 0.768 1413 -0.4071 -1.676 1414 1.1549 1.551 1415 -0.6891 -1.472 1416 -0.3691 -0.538 1417 -0.0321 0.632 1418 -0.1491 -0.694 1419 -0.9231 -1.183 1420 -0.1221 0.172 1421 -1.6411 -2.762 1422 -0.7551 -0.877 1423 -1.9051 -2.838 1424 -0.8371 -0.404 1425 -0.3891 -0.741 1426 0.9379 1.086 1427 1.2639 1.717 1428 2.2209 2.619 1429 0.4859 0.758 1430 1.1869 0.831 1431 1.3009 0.754 1432 0.6669 0.316 1433 2.0179 2.017 1434 1.1469 0.853 1435 0.7029 -0.644 1436 0.7179 -0.429 1437 -0.0781 -1.01 1438 -1.0391 -2.525 1439 -0.2651 -1.109 1440 0.2749 -0.273 1441 0.7429 0.854 1442 -0.7131 -1.661 1443 -0.4241 -1.086 1444 -0.2861 -0.366 1445 -1.5841 -2.07 1446 -0.6461 -1.514 1447 -0.2861 -0.444 1448 -1.1751 -2.226 1449 -0.9841 -1.395 1450 -1.4541 -2.917 1451 0.4759 0.183 1452 -0.0321 -0.647 1453 0.5009 0.642 1454 0.0389 -0.267 1455 -1.5191 -3.304 1456 -0.8071 -1.382 1457 -1.3881 -2.43 1458 0.4819 0.59 1459 -0.7131 -1.495 1460 0.1089 -0.433 1461 -0.4131 -0.625 1462 0.1819 0.194 1463 -0.3061 -0.923 1464 -1.8871 -3.32 1465 -1.0461 -2.146 1466 0.3919 0.9 1467 1.1929 1.779 1468 0.9029 0.461 1469 0.4119 0.365 1470 -0.1831 -0.685 1471 -1.9601 -3.733 1472 -0.1631 -1.151 1473 -0.4461 -1.671 1474 0.2489 -0.401 1475 -1.1681 -2.015 1476 -0.2581 -0.945 1477 0.0509 0.365 1478 0.4439 0.578 1479 -0.4511 -0.774 1480 -1.9911 -2.845 1481 -0.5071 -0.577 1482 0.1619 0.134 1483 -0.6861 -1.16 1484 1.5889 2.617 1485 1.2029 1.18 1486 2.0669 1.578 1487 -0.7481 -1.933 1488 -0.1101 -1.005 1489 1.0439 0.952 1490 0.8849 0.849 1491 2.0429 2.679 1492 0.6909 0.724 1493 -0.6031 -0.675 1494 -0.0221 -0.271 1495 -2.4731 -3.891 1496 -1.0491 -1.795 1497 -0.8741 -1.42 1498 1.0099 1.448 1499 1.0809 1.006 1500 -0.9971 -2.548 1501 -0.4211 -1.363 1502 0.5219 -0.012 1503 -0.3721 -0.97 1504 0.5469 0.21 1505 0.9409 0.326 1506 -1.5241 -3.218 1507 0.4289 0.526 1508 0.4189 0.519 1509 1.2979 1.591 1510 -0.2561 -0.773 1511 1.4729 1.956 1512 0.7099 0.574 1513 0.8799 0.571 1514 1.2239 1.223 1515 1.2069 0.498 1516 -0.9531 -1.891 1517 -1.3551 -2.623 1518 0.4819 -0.361 1519 0.9539 1.022 1520 1.3239 1.115 1521 1.9459 1.25 1522 -1.3511 -2.555 1523 -0.5811 -1.34 1524 -1.3071 -1.415 1525 -0.7281 -1.009 1526 0.8329 1.859 1527 0.0449 -0.014 1528 -0.7741 -1.484 1529 1.1209 1.229 1530 0.7059 1.079 1531 -0.2831 -0.482 1532 -1.1201 -2.157 1533 -0.6891 -1.164 1534 -0.5261 -0.548 1535 0.1689 -0.022 1536 1.4639 1.9 1537 0.7039 0.707 1538 -1.4131 -2.686 1539 0.5849 0.78 1540 1.1889 2.1 1541 0.6799 0.608 1542 -1.4291 -3.297 1543 0.0439 0.127 1544 -0.1921 -0.59 1545 -0.5851 -1.284 1546 -0.4551 -0.692 1547 -0.5901 -1.632 1548 -0.4511 -1.403 1549 0.4429 0.133 1550 1.0179 1.284 1551 0.0519 -0.238 1552 0.4789 0.378 1553 1.5599 2.342 1554 0.8109 0.632 1555 1.5089 1.896 1556 1.6229 2.123 1557 0.7999 0.576 1558 -0.3351 -0.689 1559 -0.4921 -1.303 1560 -0.8921 -1.566 1561 -0.8231 -1.569 1562 -0.9271 -1.417 1563 -0.6361 -1.169 1564 0.1479 0.261 1565 1.2439 1.172 1566 0.4399 -0.013 1567 -0.2381 -0.854 1568 -0.1201 -0.644 1569 0.6149 0.255 1570 0.2419 -0.114 1571 0.0189 -0.833 1572 0.2619 -0.143 1573 -1.6741 -2.863 1574 -0.9051 -2.564 1575 -0.7931 -1.703 1576 -1.3911 -2.265 1577 -0.4611 -0.898 1578 -0.7381 -1.207 1579 -1.8461 -3.076 1580 -1.5141 -2.846 1581 -1.2861 -1.731 1582 -0.8641 -1.231 1583 -1.7031 -2.66 1584 -2.3431 -3.641 1585 -2.2601 -3.996 1586 -0.7871 -0.751 1587 -0.4401 -0.388 1588 0.7119 0.674 1589 0.1129 -0.208 1590 -1.1511 -1.907 1591 -0.5311 -0.753 1592 -0.3921 -1.897 1593 -0.8701 -1.945 1594 1.6009 1.8 1595 1.3849 0.844 1596 0.9239 1.164 1597 1.1559 0.425 1598 -0.4511 -0.594 1599 0.3339 0.663 1600 -1.0021 -1.996 1601 -1.7831 -2.37 1602 -0.2241 -0.762 1603 0.7489 0.507 1604 0.7879 0.744 1605 0.6919 0.683 1606 0.3409 0.569 1607 0.1039 -0.289 1608 0.0699 0.223 1609 0.2089 0.648 1610 1.9229 2.871 1611 1.0509 1.687 1612 1.1049 1.927 1613 0.0279 -0.085 1614 -0.2111 -0.405 1615 0.1709 0.226 1616 -0.2961 0.334 1617 0.5709 0.712 1618 1.8159 2.132 1619 0.7429 0.491 1620 0.7799 1.56 1621 1.7339 2.567 1622 -0.1801 0.27 1623 -0.9911 -1.417 1624 -1.8751 -2.892 1625 -1.3791 -1.527 1626 -1.0961 -2.307 1627 0.0029 0.336 1628 -0.6521 -0.883 1629 0.7739 1.217 1630 1.1179 1.192 1631 -0.2501 -0.849 1632 -0.8571 -2.512 1633 -0.2001 -0.628 1634 0.7419 0.409 1635 0.6869 1.186 1636 0.4259 0.543 1637 0.6169 -0.195 1638 -0.4841 -1.04 1639 0.5939 0.739 1640 1.3069 1.847 1641 0.5929 0.93 1642 0.3159 0.463 1643 0.6889 0.662 1644 1.0299 0.708 1645 -0.6991 -1.354 1646 0.5449 0.884 1647 1.0979 1.192 1648 -1.0831 -2.088 1649 0.2399 0.537 1650 -0.4221 -0.101 1651 1.1009 2.368 1652 0.5159 0.48 1653 -0.3301 -0.879 1654 -2.0571 -3.157 1655 0.4149 0.442 1656 0.1829 -0.195 1657 0.2169 -0.411 1658 -0.1841 -0.884 1659 -0.1331 -0.82 1660 0.4539 0.486 1661 1.0839 1.348 1662 0.7159 0.496 1663 0.3099 -0.015 1664 -0.9601 -1.851 1665 -0.0541 -0.15 1666 -1.1401 -1.632 1667 -1.6241 -2.495 1668 -2.1171 -3.303 1669 -1.2701 -2.573 1670 -1.5931 -2.951 1671 -0.3761 -0.618 1672 -0.5671 -0.875 1673 -0.1321 -0.43 1674 0.2949 0.29 1675 -0.4611 -0.709 1676 -0.6001 -1.801 1677 0.5309 0.096 1678 0.9059 -0.014 1679 -0.4351 -0.923 1680 0.8019 1.585 1681 0.3629 0.493 1682 0.1809 0.862 1683 0.9369 1.666 1684 -0.9181 -1.044 1685 -2.6421 -4.178 1686 -0.6801 -0.854 1687 0.1329 0.271 1688 0.2649 0.328 1689 1.5689 1.977 1690 0.9549 1.395 1691 0.0569 -0.336 1692 0.9839 1.55 1693 0.8839 1.548 1694 -0.1971 -0.031 1695 0.6589 0.585 1696 -1.1661 -2.299 1697 0.1389 -0.416 1698 -0.4061 -1.011 1699 0.4779 1.203 1700 -0.2591 -0.185 1701 1.1829 1.95 1702 0.2199 -0.069 1703 0.2829 -0.178 1704 -0.6961 -1.295 1705 -0.9631 -1.373 1706 0.5199 0.383 1707 -0.7681 -1.514 1708 0.1639 -0.563 1709 -1.2351 -1.719 1710 1.3679 1.98 1711 0.0419 0.6 1712 1.3109 1.55 1713 0.2609 0.197 1714 0.1299 -0.091 1715 -0.7351 -1.443 1716 -1.5991 -2.634 1717 -0.5421 -0.78 1718 1.0469 0.998 1719 -0.2061 -0.579 1720 2.0989 2.72 1721 1.7459 1.994 1722 0.5199 0.618 1723 0.1439 0.4 1724 -0.4421 -1.088 1725 -0.2871 -0.285 1726 1.7359 2.701 1727 0.4149 1.053 1728 -0.9831 -1.484 1729 -2.3061 -3.549 1730 -1.5951 -2.23 1731 -0.7031 -1.267 1732 -0.0641 -0.139 1733 -1.7061 -2.634 1734 0.5099 0.277 1735 -1.1971 -2.579 1736 -0.5171 -0.39 1737 -1.0901 -1.301 1738 -0.3791 -0.489 1739 -1.0291 -1.858 1740 -0.6031 -1.458 1741 0.0559 -0.294 1742 -0.9291 -1.768 1743 1.0799 1.12 1744 0.0829 -0.117 1745 0.4519 1.034 1746 2.1479 3.47 1747 2.7219 4.211 1748 -1.6991 -3.166 1749 0.6629 1.123 1750 -0.6081 -0.923 1751 0.5349 0.552 1752 -1.5941 -3.119 1753 -0.4181 -1.855 1754 0.1419 -0.293 1755 0.2289 -0.481 1756 -0.2121 -0.919 1757 -0.8751 -1.856 1758 0.3199 0.493 1759 0.4799 0.895 1760 -0.1371 0.041 1761 0.4309 0.022 1762 1.4589 1.577 1763 -1.1421 -1.815 1764 0.5239 0.898 1765 -0.3961 -0.688 1766 1.0299 1.83 1767 -0.0631 0.194 1768 0.3059 0.929 1769 0.3829 0.571 1770 0.1269 0.221 1771 1.1809 1.945 1772 0.1699 0.091 1773 -1.5951 -3.03 1774 -0.6371 -1.954 1775 -0.7931 -1.162 1776 -0.4331 -0.364 1777 -0.9011 -1.55 1778 -1.0821 -1.498 1779 -0.9091 -1.218 1780 -1.2721 -2.352 1781 -0.5651 -1.262 1782 -1.0381 -2.62 1783 0.7509 0.742 1784 1.9349 2.617 1785 0.0009 -0.511 1786 -1.1731 -1.606 1787 0.2459 0.813 1788 -0.5721 -0.923 1789 -1.7811 -2.127 1790 -0.7451 -1.457 1791 0.5089 0.817 1792 1.0039 1.168 1793 2.2219 3.569 1794 0.7319 0.182 1795 0.5439 0.438 1796 -0.0441 -0.431 1797 -0.6041 -1.172 1798 -0.6281 -1.584 1799 0.1759 0.162 1800 0.2749 -0.037 1801 -0.9741 -1.573 1802 -0.0511 0.274 1803 -0.1881 -0.685 1804 0.3519 0.829 1805 -1.0371 -1.18 1806 -1.2261 -2.219 1807 -0.0411 -0.135 1808 -0.4291 -1.087 1809 -0.6041 -0.752 1810 -0.4921 -0.533 1811 -0.2771 -0.167 1812 -0.0711 -0.27 1813 -0.8431 -1.632 1814 -0.3051 -0.556 1815 0.8119 1.307 1816 2.6079 3.887 1817 1.2039 1.264 1818 -1.0641 -2.506 1819 -1.3871 -3.044 1820 -2.0541 -3.411 1821 -0.1831 0.015 1822 -1.3081 -2.297 1823 -0.8801 -1.706 1824 -1.1921 -1.238 1825 0.1369 -0.239 1826 0.7359 0.18 1827 1.0149 0.832 1828 1.5749 2.189 1829 0.2329 0.267 1830 0.4649 0.831 1831 0.2039 0.141 1832 -0.3071 -0.111 1833 0.8489 1.83 1834 0.4959 0.798 1835 1.0169 1.293 1836 -0.1461 -0.874 1837 0.8579 0.798 1838 0.8889 1.098 1839 1.8609 2.861 1840 1.6109 2.234 1841 0.7149 0.33 1842 -1.8211 -2.623 1843 -0.0961 -1.083 1844 0.6859 0.737 1845 -0.4711 -0.741 1846 0.0529 0.277 1847 -2.4161 -3.768 1848 -0.4511 -0.687 1849 0.5319 1.013 1850 0.9989 1.603 1851 -1.4671 -1.967 1852 0.2899 0.87 1853 0.1759 0.264 1854 -0.0681 -0.177 1855 0.1629 0.205 1856 0.7919 1.142 1857 -0.1741 -0.677 1858 0.8009 1.278 1859 -0.7881 -1.118 1860 -0.2811 -0.585 1861 -1.8821 -2.844 1862 -0.6341 -0.875 1863 -1.0731 -2.013 1864 -0.8561 -2.135 1865 -0.5461 -0.83 1866 0.5639 0.805 1867 0.7699 1.123 1868 1.1709 1.918 1869 1.9419 2.347 1870 -0.1121 0.004 1871 -0.6501 -1.461 1872 -0.2331 -1.068 1873 -1.1181 -1.991 1874 -0.6681 -0.887 1875 -0.2661 -0.79 1876 -0.3731 -0.912 1877 -0.0541 0.063 1878 0.0359 0.047 1879 -0.8171 -1.509 1880 -2.1171 -2.956 1881 -0.8031 -1.787 1882 0.0609 -0.01 1883 -0.4751 -0.854 1884 0.4149 0.508 1885 1.2029 1.389 1886 -0.1401 -0.484 1887 -0.0531 -0.422 1888 0.2659 0.854 1889 0.3009 0.325 1890 -0.0651 -0.27 1891 1.0049 1.171 1892 0.2169 -0.137 1893 -1.0681 -1.856 1894 -1.1471 -2.547 1895 0.2399 -0.6 1896 -1.0341 -1.877 1897 0.6899 0.652 1898 1.0959 1.417 1899 -1.0771 -1.593 1900 -0.9341 -2.074 1901 -0.1871 -0.623 1902 -1.6881 -2.783 1903 0.6829 1.074 1904 -1.8201 -3.706 1905 0.8309 1.291 1906 0.4169 0.809 1907 1.5209 2.498 1908 1.0139 2.388 1909 -0.0531 0.571 1910 -0.7571 -1.1 1911 0.7199 0.764 1912 0.9639 1.663 1913 -0.1141 0.057 1914 1.4529 2.386 1915 1.4899 2.341 1916 0.6819 1.446 1917 0.6169 1.33 1918 -0.3711 -0.911 1919 1.3739 2.162 1920 1.9009 2.847 1921 1.3559 1.009 1922 -0.1721 -0.391 1923 -0.5121 -1.005 1924 0.3579 0.305 1925 -1.7401 -2.631 1926 1.1869 0.858 1927 0.1289 0.303 1928 -0.0701 0.045 1929 -0.3611 -0.427 1930 0.2739 0.385 1931 1.0249 0.563 1932 1.0459 1.173 1933 0.8549 0.897 1934 -1.1381 -2.279 1935 -0.1431 -0.348 1936 -0.2371 -1.109 1937 0.7989 0.748 1938 0.0689 -0.056 1939 -0.7641 -1.271 1940 -0.2411 -0.479 1941 1.7659 2.191 1942 1.3889 1.729 1943 0.0389 -0.338 1944 0.4629 0.332 1945 -0.5561 -0.407 1946 -1.6501 -2.408 1947 -0.0621 -0.833 1948 0.0919 -0.549 1949 1.1629 1.207 1950 -0.6381 -1.379 1951 -1.3371 -2.763 1952 -0.2481 -0.411 1953 -0.8281 -1.554 1954 -1.4511 -2.174 1955 -0.8951 -2.139 1956 -2.1501 -3.521 1957 -0.7841 -1.682 1958 0.2249 -0.092 1959 -0.7671 -1.762 1960 0.2069 -0.29 1961 -0.3341 -1.591 1962 -0.4991 -0.522 1963 -1.3641 -1.389 1964 -1.1281 -1.809 1965 0.2419 0.344 1966 -0.1871 -0.121 1967 -0.6581 -1.228 1968 0.1809 0.626 1969 0.0119 -0.09 1970 0.5599 0.529 1971 -1.3591 -2.57 1972 -0.7671 -1.015 1973 0.3469 1.411 1974 -1.1521 -2.1 1975 0.7009 1.194 1976 -0.5091 -0.171 1977 -1.1001 -1.488 1978 -0.2961 -0.093 1979 0.8919 1.527 1980 0.5409 0.595 1981 0.1639 -0.124 1982 0.6009 1.094 1983 1.8389 2.396 1984 1.6779 1.598 1985 2.8339 3.233 1986 3.0719 4.408 1987 2.6389 3.743 1988 2.9319 1989 -0.9661 1990 -0.3621 1991 0.8739 1992 -0.0481 1993 0.0819 1994 0.0029