# Stahle - Black River South Carolina Update - TADI - ITRDB SC007 #---------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #---------------------------------------------------- # Template Version 4.0 # Encoding: UTF-8 # NOTE: Please cite original publication, NOAA Landing Page URL, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, study title, NOAA Landing Page URL, and date accessed. # # Description/Documentation lines begin with # # Data lines have no # # # NOAA_Landing_Page: https://www.ncei.noaa.gov/access/paleo-search/study/22351 # Landing_Page_Description: NOAA Landing Page of this file's parent study, which includes all study metadata. # # Study_Level_JSON_Metadata: https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/json/noaa-tree-22351.json # Study_Level_JSON_Description: JSON metadata of this data file's parent study, which includes all study metadata. # # Data_Type: Tree Ring # # Dataset_DOI: # # Science_Keywords: #-------------------- # Resource_Links # # Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/sc007-crn-noaa.txt # Data_Download_Description: Raw Measurements - NOAA Template File; sc007-crn-noaa.txt # # Related_Online_Resource: https://www.ncei.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/sc007.crn # Related_Online_Description: CRN File; Chronology - Tucson Decadal File # #-------------------- # Contribution_Date # Date: 2016-07-07 #-------------------- # File_Last_Modified_Date # Date: 2016-07-07 #-------------------- # Title # Study_Name: Stahle - Black River South Carolina Update - TADI - ITRDB SC007 #-------------------- # Investigators # Investigators: Stahle, D.W.; Griffin, R.D.; Jennings, J.; Sierzchula, S. #-------------------- # Description_Notes_and_Keywords # Description: NOAA Template Chronology file added 2018-12-20. NOAA Template Raw Measurements file added 2019-02-08. #-------------------- # Publication # Authors: David W. Stahle, Edward R. Cook, Dorian J. Burnette, Jose Villanueva, Julian Cerano, Jordan N. Burns, Daniel Griffin, Benjamin I. Cook, Rodolfo Acuna, Max C.A. Torbenson, Paul Sjezner, Ian M. Howard # Journal_Name: Quaternary Science Reviews # Published_Title: The Mexican Drought Atlas: Tree-ring reconstructions of the soil moisture balance during the late pre-Hispanic, colonial, and modern eras # Published_Date_or_Year: 2016 # Volume: 149 # Pages: 34-60 # Issue: # Report_Number: # DOI: 10.1016/j.quascirev.2016.06.018 # Full_Citation: None # Abstract: Mexico has suffered a long history and prehistory of severe sustained drought. Drought over Mexico is modulated by ocean-atmospheric variability in the Atlantic and Pacific, raising the possibility for long-range seasonal climate forecasting, which could help mediate the economic and social impacts of future dry spells. The instrumental record of Mexican climate is very limited before 1920, but tree-ring chronologies developed from old-growth forests in Mexico can provide an excellent proxy representation of the spatial pattern and intensity of past moisture regimes useful for the analysis of climate dynamics and climate impacts. The Mexican Drought Atlas (MXDA) has been developed from an extensive network of 252 climate sensitive tree-ring chronologies in and near Mexico. The MXDA reconstructions extend from 1400 CE-2012 and were calibrated with the instrumental summer (JJA) self-calibrating Palmer Drought Severity Index (scPDSI) on a 0.5 latitude/longitude grid extending over land areas from 14 to 34N and 75-120W using Ensemble Point-by-Point Regression (EPPR) for the 1944-1984 period. The grid point reconstructions were validated for the period 1920-1943 against instrumental gridded scPDSI values based on the fewer weather station observations available during that interval. The MXDA provides a new spatial perspective on the historical impacts of moisture extremes over Mexico during the past 600-years, including the Aztec Drought of One Rabbit in 1454, the drought of El Ano de Hambre in 1785-1786, and the drought that preceded the Mexican Revolution of 1909-1910. # The El Nino/Southern Oscillation (ENSO) is the most important ocean-atmospheric forcing of moisture variability detected with the MXDA. In fact, the reconstructions suggest that the strongest central equatorial Pacific sea surface temperature (SST) teleconnection to the soil moisture balance over North America may reside in northern Mexico. This ENSO signal has stronger and more time-stable correlations than computed for either the Atlantic Multidecadal Oscillation or Pacific Decadal Oscillation. The extended Multivariate ENSO Index is most highly correlated with reconstructed scPDSI over northern Mexico, where warm events favor moist conditions during the winter, spring, and early summer. This ENSO teleconnection to northern Mexico has been strong over the past 150 years, but it has been comparatively weak and non-stationary in the MXDA over central and southern Mexico where eastern tropical Pacific and Caribbean/tropical Atlantic SSTs seem to be more important. The ENSO teleconnection to northern Mexico is weaker in the available instrumental PDSI, but analyses based on the millennium climate simulations with the Community Earth System Model suggest that the moisture balance during the winter, spring, and early summer over northern Mexico may indeed be particularly sensitive to ENSO forcing. Nationwide drought is predicted to become more common with anthropogenic climate change, but the MXDA reconstructions indicate that intense "All Mexico" droughts have been rare over the past 600 years and their frequency does not appear to have increased substantially in recent decades. #-------------------- # Funding_Agency # Funding_Agency_Name: # Grant: #-------------------- # Site_Information # Site_Name: Black River South Carolina # Location: South Carolina # Northernmost_Latitude: 33.8 # Southernmost_Latitude: 33.8 # Easternmost_Longitude: -79.87 # Westernmost_Longitude: -79.87 # Elevation_m: 1 #-------------------- # Data_Collection # Collection_Name: SC007 # First_Year: 1101 # Last_Year: 2010 # Time_Unit: CE # Core_Length_m: # Parameter_Keywords: ring width # Notes: #-------------------- # Species # Species_Name: Taxodium distichum (L.) Rich. # Common_Name: baldcypress # Tree_Species_Code: TADI #-------------------- # Variables # # PaST_Thesaurus_Download_Resource: https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf # PaST_Thesaurus_Download_Description: Paleoenvironmental Standard Terms (PaST) Thesaurus terms, definitions, and relationships in SKOS format. # # Data variables follow that are preceded by '##' in columns one and two. # Variables format: shortname-tab-var components: what, material, error, units, seasonality, data type, detail, method, C or N for Character or Numeric data) # ## age_CE age,,,year Common Era,,tree ring,,,N, ## trsgi tree ring standardized growth index,,,,,tree ring,composited,standard chronology method,N, ## numsamp number of samples,,,count,,tree ring,,,N, #--------------------- # Data: # Missing_Values: NA age_CE trsgi numsamp 1101 1.134 1 1102 1.127 2 1103 1.106 2 1104 0.797 2 1105 0.767 2 1106 0.992 2 1107 0.924 2 1108 1.435 2 1109 1.163 2 1110 1.458 2 1111 1.411 2 1112 1.333 2 1113 1.297 2 1114 1.619 2 1115 1.637 2 1116 1.28 2 1117 1.625 2 1118 1.613 2 1119 1.49 2 1120 1.08 2 1121 1.013 2 1122 1.214 2 1123 1.045 2 1124 0.963 2 1125 0.938 2 1126 0.876 2 1127 0.908 4 1128 1.088 4 1129 0.889 4 1130 0.725 4 1131 0.997 4 1132 1.175 4 1133 1.115 4 1134 1.004 4 1135 0.681 5 1136 0.677 5 1137 1.287 5 1138 1.275 5 1139 1.083 5 1140 1.164 5 1141 1.026 5 1142 0.916 5 1143 0.905 5 1144 0.794 5 1145 0.759 5 1146 0.83 5 1147 0.704 5 1148 0.757 5 1149 0.573 5 1150 0.782 5 1151 0.771 5 1152 0.639 5 1153 0.95 6 1154 0.809 6 1155 1.065 6 1156 0.945 6 1157 0.859 6 1158 0.889 6 1159 1.235 6 1160 1.16 6 1161 1.169 6 1162 1.649 6 1163 1.377 6 1164 1.251 6 1165 1.66 6 1166 2.124 6 1167 2.262 9 1168 1.584 9 1169 1.246 10 1170 1.495 10 1171 1.451 10 1172 1.386 10 1173 1.505 10 1174 1.231 10 1175 0.877 10 1176 1.033 10 1177 1.097 10 1178 1.403 10 1179 0.932 11 1180 0.959 11 1181 0.817 11 1182 1.083 11 1183 1.256 11 1184 1.378 12 1185 0.748 12 1186 1.059 12 1187 0.835 13 1188 0.835 13 1189 1.135 14 1190 1.051 14 1191 0.849 14 1192 0.812 14 1193 1.01 14 1194 0.858 14 1195 0.786 14 1196 1.114 14 1197 0.877 15 1198 0.691 15 1199 0.868 15 1200 1.142 16 1201 0.818 16 1202 0.845 17 1203 0.69 17 1204 1.08 17 1205 1.176 17 1206 1.013 17 1207 0.93 17 1208 0.86 17 1209 0.901 17 1210 1.231 17 1211 0.924 17 1212 1.043 17 1213 0.821 17 1214 1.019 17 1215 0.995 17 1216 0.806 17 1217 0.704 17 1218 1.205 17 1219 1.652 17 1220 1.463 17 1221 1.29 17 1222 1.058 17 1223 0.872 17 1224 1.539 17 1225 1.565 17 1226 1.404 17 1227 0.761 17 1228 1.01 17 1229 1.068 17 1230 1.173 18 1231 0.862 18 1232 0.955 18 1233 1.154 18 1234 0.871 18 1235 0.979 18 1236 0.968 18 1237 0.772 18 1238 1.389 18 1239 1.119 18 1240 0.951 18 1241 1.076 18 1242 0.964 18 1243 0.836 18 1244 0.852 18 1245 0.883 18 1246 0.514 18 1247 0.608 18 1248 0.545 18 1249 1.024 18 1250 0.875 18 1251 0.81 18 1252 0.69 18 1253 0.898 18 1254 0.886 18 1255 0.715 18 1256 0.912 18 1257 0.492 18 1258 0.688 18 1259 0.595 18 1260 0.775 18 1261 1.019 18 1262 0.73 18 1263 0.474 18 1264 1.293 18 1265 1.386 18 1266 1.182 18 1267 1.097 18 1268 1.019 18 1269 0.95 18 1270 1.096 18 1271 1.476 18 1272 1.648 18 1273 1.636 18 1274 1.252 18 1275 1.072 18 1276 1.119 18 1277 1.457 18 1278 1.146 18 1279 0.698 18 1280 0.849 18 1281 0.811 18 1282 0.603 21 1283 0.75 21 1284 0.838 21 1285 1.275 21 1286 1.156 21 1287 0.78 21 1288 0.71 21 1289 0.844 21 1290 1.426 21 1291 1.281 21 1292 1.525 21 1293 0.813 20 1294 0.89 20 1295 1.296 20 1296 0.724 20 1297 1.275 20 1298 1.109 20 1299 1.533 20 1300 1.404 20 1301 1.202 20 1302 1.23 20 1303 1.086 20 1304 1.128 22 1305 0.966 22 1306 1.241 22 1307 1.104 22 1308 1.073 22 1309 1.002 22 1310 1.166 22 1311 0.551 22 1312 0.655 22 1313 1.356 22 1314 1.396 22 1315 1.044 22 1316 1.456 22 1317 1.665 22 1318 1.526 22 1319 1.38 22 1320 1.661 22 1321 1.579 22 1322 1.227 22 1323 1.293 22 1324 1.018 22 1325 1.013 22 1326 1.237 22 1327 1.47 22 1328 1.327 22 1329 0.938 22 1330 1.437 22 1331 1.075 22 1332 1.021 22 1333 0.85 22 1334 0.82 22 1335 0.738 21 1336 0.872 21 1337 1.103 21 1338 1.197 21 1339 1.054 21 1340 1.343 21 1341 1.467 21 1342 1.275 21 1343 1.58 21 1344 1.704 21 1345 1.835 21 1346 1.676 22 1347 1.37 21 1348 1.193 21 1349 1.112 21 1350 1.012 21 1351 1.105 20 1352 0.975 20 1353 1.183 20 1354 1.008 20 1355 1.094 20 1356 0.865 20 1357 1.183 20 1358 1.144 20 1359 0.826 20 1360 1.01 20 1361 1.046 20 1362 1.232 20 1363 1.106 20 1364 1.028 20 1365 1.006 20 1366 1.141 20 1367 0.768 20 1368 1.372 20 1369 0.656 19 1370 1.251 19 1371 1.193 19 1372 0.704 19 1373 0.648 19 1374 0.752 19 1375 0.752 19 1376 0.988 20 1377 1.152 20 1378 1.127 20 1379 1.072 20 1380 0.821 21 1381 1.162 21 1382 0.952 21 1383 1.314 21 1384 1.41 21 1385 1.131 21 1386 0.953 21 1387 1.891 21 1388 1.646 21 1389 1.126 21 1390 1.271 21 1391 1.416 21 1392 0.938 21 1393 1.179 21 1394 1.307 21 1395 0.579 21 1396 0.855 21 1397 1.037 21 1398 0.777 21 1399 0.933 21 1400 1.349 21 1401 0.922 21 1402 1.077 21 1403 1.312 21 1404 1.188 21 1405 1.129 21 1406 1.348 21 1407 1.019 21 1408 1.023 20 1409 1.215 20 1410 0.691 20 1411 1.094 19 1412 1.262 19 1413 1.193 19 1414 0.997 19 1415 1.05 19 1416 1.022 20 1417 0.971 20 1418 1.232 20 1419 1.129 20 1420 0.839 20 1421 0.453 20 1422 0.61 20 1423 0.731 20 1424 0.976 20 1425 1.239 20 1426 0.577 20 1427 0.643 20 1428 0.854 22 1429 1.39 22 1430 1.672 24 1431 0.595 24 1432 0.684 24 1433 0.843 24 1434 0.978 25 1435 0.666 26 1436 1.032 26 1437 1.114 27 1438 1.19 27 1439 1.389 27 1440 0.647 29 1441 1.301 28 1442 0.8 28 1443 1.439 28 1444 1.213 28 1445 0.843 28 1446 1.003 28 1447 0.714 28 1448 1.141 28 1449 1.297 28 1450 0.893 27 1451 0.602 27 1452 0.868 27 1453 0.46 27 1454 0.738 27 1455 0.357 27 1456 0.622 27 1457 0.908 27 1458 0.794 27 1459 0.785 27 1460 0.884 27 1461 1.009 27 1462 1.836 27 1463 0.861 27 1464 1.17 26 1465 0.745 26 1466 1.116 26 1467 1.315 26 1468 1.16 26 1469 0.926 26 1470 0.717 26 1471 0.768 25 1472 0.403 25 1473 0.779 25 1474 0.874 25 1475 0.548 25 1476 1.116 26 1477 0.953 26 1478 1.471 26 1479 1.545 26 1480 1.244 26 1481 1.3 26 1482 1.085 26 1483 1.043 26 1484 0.955 26 1485 1.211 26 1486 0.643 26 1487 1.082 26 1488 0.766 26 1489 0.532 26 1490 0.816 26 1491 0.503 26 1492 0.947 26 1493 1.517 26 1494 1.02 26 1495 1.483 26 1496 1.096 26 1497 1.263 26 1498 1.043 27 1499 0.709 27 1500 0.762 27 1501 0.629 26 1502 0.964 26 1503 1.262 27 1504 1.27 27 1505 0.912 27 1506 0.679 27 1507 0.821 27 1508 1.203 27 1509 0.45 27 1510 0.763 27 1511 1.039 26 1512 1.325 26 1513 1.03 26 1514 0.771 26 1515 0.941 26 1516 1.212 26 1517 1.194 26 1518 0.916 26 1519 1.041 26 1520 0.86 26 1521 0.399 26 1522 0.853 26 1523 1.155 26 1524 1.005 26 1525 1.314 26 1526 1.423 26 1527 1.309 26 1528 0.988 26 1529 1.851 26 1530 1.225 25 1531 1.411 25 1532 1.457 25 1533 0.882 25 1534 1.023 25 1535 0.536 25 1536 0.584 25 1537 0.751 25 1538 0.846 25 1539 1.388 25 1540 1.208 25 1541 1.118 23 1542 0.686 23 1543 0.932 23 1544 0.886 23 1545 0.994 23 1546 1.124 23 1547 0.904 23 1548 1.314 22 1549 0.996 22 1550 1.31 22 1551 0.818 22 1552 0.441 22 1553 1.248 22 1554 1.218 22 1555 1.409 22 1556 0.888 22 1557 0.654 22 1558 1.252 22 1559 0.78 22 1560 0.862 22 1561 0.92 22 1562 0.887 22 1563 0.769 22 1564 0.916 22 1565 0.999 21 1566 0.482 20 1567 0.755 20 1568 0.426 20 1569 0.581 20 1570 0.77 20 1571 1.034 20 1572 1.215 20 1573 1.049 20 1574 1.026 20 1575 0.978 20 1576 1.23 20 1577 1.268 20 1578 1.478 20 1579 1.447 20 1580 1.243 20 1581 1.065 19 1582 1.107 19 1583 0.67 19 1584 0.569 19 1585 1.024 19 1586 1.038 19 1587 0.343 19 1588 0.645 19 1589 0.822 19 1590 1.366 19 1591 0.727 19 1592 0.949 19 1593 0.792 19 1594 0.792 19 1595 0.575 19 1596 1.114 18 1597 0.653 18 1598 0.765 18 1599 0.604 18 1600 1.215 17 1601 0.987 17 1602 1.339 17 1603 0.88 17 1604 0.601 17 1605 0.992 17 1606 1.208 17 1607 0.865 17 1608 0.63 17 1609 0.986 17 1610 0.529 17 1611 0.632 16 1612 0.746 16 1613 1.063 16 1614 1.059 16 1615 1.364 16 1616 1.122 16 1617 1.092 16 1618 0.874 16 1619 1.008 16 1620 0.849 16 1621 0.824 16 1622 0.662 16 1623 1.03 16 1624 1.189 17 1625 1.216 17 1626 0.75 16 1627 0.978 16 1628 0.87 16 1629 0.861 16 1630 0.834 16 1631 0.823 16 1632 0.608 16 1633 0.489 16 1634 0.546 16 1635 1.277 16 1636 0.814 16 1637 0.749 16 1638 0.426 16 1639 0.669 16 1640 0.545 16 1641 0.572 14 1642 0.792 14 1643 0.375 14 1644 0.688 14 1645 0.452 14 1646 1.329 14 1647 1.019 15 1648 0.695 15 1649 1.33 15 1650 1.085 16 1651 0.923 16 1652 0.578 16 1653 0.872 16 1654 0.723 16 1655 1.217 17 1656 0.871 17 1657 0.655 17 1658 0.629 17 1659 0.431 17 1660 0.608 17 1661 0.906 17 1662 0.81 17 1663 0.601 17 1664 0.657 17 1665 0.773 17 1666 0.717 17 1667 0.755 17 1668 0.76 17 1669 0.653 17 1670 0.496 17 1671 0.878 17 1672 0.691 17 1673 0.766 18 1674 0.941 18 1675 0.853 18 1676 0.733 19 1677 0.705 19 1678 1.083 19 1679 1.057 20 1680 1.127 20 1681 1.354 20 1682 1.066 20 1683 1.082 19 1684 0.904 19 1685 1.112 19 1686 1.073 19 1687 0.885 19 1688 1.057 20 1689 1.149 19 1690 0.906 18 1691 0.716 18 1692 1.024 18 1693 0.84 18 1694 1.11 18 1695 1.075 18 1696 0.719 17 1697 0.603 17 1698 0.921 17 1699 0.977 17 1700 0.646 18 1701 0.692 18 1702 0.897 18 1703 0.663 18 1704 0.708 18 1705 1.214 18 1706 0.952 19 1707 1.062 19 1708 0.542 19 1709 0.693 19 1710 0.674 19 1711 0.981 19 1712 1.176 19 1713 0.804 19 1714 0.463 19 1715 0.464 19 1716 0.527 19 1717 0.878 19 1718 0.609 19 1719 1.066 19 1720 0.696 21 1721 1.317 21 1722 0.792 21 1723 1.499 22 1724 1.026 22 1725 1.12 23 1726 0.662 23 1727 0.509 23 1728 0.457 24 1729 0.53 24 1730 0.453 24 1731 0.712 24 1732 0.698 24 1733 0.627 24 1734 0.802 24 1735 0.658 24 1736 0.888 24 1737 0.956 24 1738 0.525 24 1739 0.887 24 1740 0.913 25 1741 0.835 25 1742 0.999 25 1743 0.823 25 1744 0.61 25 1745 0.688 25 1746 0.488 25 1747 0.694 27 1748 0.543 27 1749 0.719 27 1750 0.696 27 1751 0.994 27 1752 0.705 27 1753 0.924 27 1754 0.807 27 1755 0.899 27 1756 0.496 28 1757 0.937 28 1758 0.753 28 1759 0.872 28 1760 0.873 29 1761 1.518 29 1762 0.712 31 1763 0.585 32 1764 0.726 33 1765 0.776 33 1766 1.292 33 1767 0.942 33 1768 1.299 33 1769 0.939 33 1770 1.233 33 1771 1.309 33 1772 0.987 33 1773 0.774 33 1774 0.671 33 1775 0.894 33 1776 1.523 33 1777 0.987 33 1778 0.626 33 1779 0.751 33 1780 0.976 34 1781 0.738 34 1782 0.927 34 1783 0.902 34 1784 0.715 34 1785 1.336 34 1786 1.61 34 1787 1.13 34 1788 0.949 34 1789 1.022 34 1790 0.976 34 1791 0.774 34 1792 0.952 34 1793 1.153 34 1794 0.83 34 1795 1.083 34 1796 0.969 34 1797 0.67 34 1798 0.948 34 1799 0.508 34 1800 0.888 35 1801 0.569 34 1802 0.57 34 1803 1.036 35 1804 1.272 35 1805 0.886 34 1806 0.888 35 1807 1.119 35 1808 0.961 35 1809 0.712 35 1810 1.415 36 1811 0.882 37 1812 1.2 37 1813 0.898 37 1814 0.982 37 1815 0.709 37 1816 0.358 37 1817 0.899 37 1818 0.313 37 1819 0.567 37 1820 0.746 37 1821 2.304 38 1822 1.034 38 1823 1.015 38 1824 0.576 38 1825 1.54 38 1826 0.706 38 1827 0.953 38 1828 0.864 38 1829 0.987 38 1830 0.734 39 1831 0.88 39 1832 1.141 39 1833 1.494 39 1834 0.978 39 1835 0.944 40 1836 1.197 40 1837 0.564 40 1838 0.924 40 1839 0.568 40 1840 1.035 41 1841 0.723 41 1842 0.905 41 1843 0.899 41 1844 0.669 41 1845 0.241 41 1846 1.09 41 1847 1.121 41 1848 0.975 41 1849 0.362 41 1850 0.892 42 1851 0.782 41 1852 1.064 41 1853 0.857 41 1854 1.169 41 1855 1.029 41 1856 0.873 41 1857 0.605 41 1858 0.795 41 1859 0.96 41 1860 1.032 43 1861 0.541 42 1862 1.233 43 1863 1.472 43 1864 1.223 43 1865 1.227 43 1866 1.496 43 1867 1.141 43 1868 1.807 44 1869 0.74 44 1870 0.825 44 1871 0.866 44 1872 0.672 44 1873 0.906 44 1874 1.1 44 1875 0.944 44 1876 0.702 44 1877 0.718 44 1878 0.707 44 1879 0.797 44 1880 0.587 45 1881 0.51 45 1882 0.576 45 1883 1.106 45 1884 1.203 46 1885 1.257 46 1886 1.636 46 1887 0.606 46 1888 1.435 47 1889 1.203 47 1890 0.975 47 1891 1.076 47 1892 1.153 47 1893 1.06 49 1894 1.104 49 1895 1.403 49 1896 1.094 49 1897 0.92 49 1898 0.842 49 1899 0.885 49 1900 0.951 53 1901 1.449 53 1902 0.484 53 1903 1.314 53 1904 0.715 53 1905 1.01 53 1906 1.135 53 1907 1.096 53 1908 1.413 54 1909 1.23 54 1910 1.078 56 1911 0.625 56 1912 1.325 56 1913 0.929 56 1914 0.936 56 1915 1.167 56 1916 0.923 58 1917 1.484 58 1918 0.952 58 1919 0.961 58 1920 0.995 59 1921 1.098 59 1922 1.596 59 1923 1.128 59 1924 1.309 59 1925 1.056 59 1926 0.919 59 1927 0.949 59 1928 1.492 59 1929 2.314 59 1930 1.306 58 1931 1.034 56 1932 0.644 56 1933 1.067 56 1934 0.991 56 1935 1.009 56 1936 1.169 56 1937 1.317 56 1938 1.207 56 1939 1.099 56 1940 0.676 56 1941 0.961 56 1942 1.129 56 1943 0.945 56 1944 0.959 56 1945 1.115 56 1946 1.269 56 1947 1.271 56 1948 1.241 55 1949 1.386 55 1950 0.925 55 1951 1.135 54 1952 1.157 54 1953 0.865 54 1954 0.87 54 1955 0.926 54 1956 0.56 54 1957 0.927 53 1958 1.355 53 1959 1.18 53 1960 1.383 53 1961 1.465 53 1962 1.282 53 1963 1.189 53 1964 1.178 53 1965 1.823 53 1966 1.381 53 1967 1.203 53 1968 1.369 53 1969 1.199 53 1970 0.989 53 1971 1.437 53 1972 1.193 53 1973 1.815 53 1974 1.316 53 1975 1.174 53 1976 1.553 53 1977 0.778 53 1978 1.246 53 1979 1.159 53 1980 0.879 53 1981 0.345 53 1982 1.223 53 1983 1.247 53 1984 1.659 53 1985 0.976 53 1986 1.068 53 1987 0.985 53 1988 1.23 53 1989 1.395 53 1990 1.159 53 1991 1.592 53 1992 1.921 53 1993 1.209 53 1994 1.187 21 1995 1.018 21 1996 1.182 21 1997 1.226 21 1998 1.449 21 1999 1.347 21 2000 0.852 21 2001 0.959 21 2002 0.925 21 2003 1.001 21 2004 0.722 21 2005 1.098 21 2006 1.095 21 2007 1.136 21 2008 0.98 21 2009 1.018 21 2010 0.89 21