Year aa-index 1099 21.6 1100 22 1101 22.1 1102 18.6 1103 16.9 1104 14.5 1105 11.1 1106 11.9 1107 12.4 1108 13.9 1109 14.4 1110 24.2 1111 28.7 1112 27.3 1113 28.7 1114 29.2 1115 21.4 1116 29 1117 32 1118 27.9 1119 29.2 1120 29.3 1121 27.5 1122 25.4 1123 22.5 1124 18.2 1125 17.4 1126 16.7 1127 15.3 1128 17.6 1129 25.1 1130 26.4 1131 28.2 1132 31.3 1133 26.4 1134 19.5 1135 21.4 1136 20.9 1137 21.1 1138 23.2 1139 21.4 1140 21.4 1141 19.8 1142 17.3 1143 16 1144 13 1145 12.2 1146 11.8 1147 12.8 1148 14.7 1149 15.5 1150 17.6 1151 22.4 1152 23 1153 22.6 1154 22.4 1155 17.4 1156 11.9 1157 12.1 1158 12.1 1159 11 1160 11.3 1161 9.7 1162 9.9 1163 9.4 1164 8.8 1165 9.3 1166 9 1167 8.3 1168 10.3 1169 12.7 1170 14.6 1171 16.5 1172 18.5 1173 19 1174 16.2 1175 16.3 1176 15.5 1177 13.3 1178 13 1179 11.8 1180 8.9 1181 11.7 1182 13.4 1183 14 1184 15.9 1185 21.5 1186 23.4 1187 22.6 1188 21.4 1189 18.7 1190 13.5 1191 15.4 1192 16.7 1193 14.7 1194 16.3 1195 18.3 1196 18.4 1197 18.6 1198 16.6 1199 13.8 1200 15.9 1201 17.2 1202 18.3 1203 20.6 1204 18.5 1205 17.3 1206 14.9 1207 11.2 1208 8.3 1209 5.2 1210 2 1211 1.7 1212 3.1 1213 5.7 1214 7.4 1215 9.2 1216 10.8 1217 12.1 1218 12.5 1219 16.8 1220 17.8 1221 17.1 1222 17 1223 14.7 1224 10.8 1225 13.5 1226 14.9 1227 14.7 1228 14.9 1229 15.6 1230 16.4 1231 15.5 1232 15.2 1233 15.2 1234 11.7 1235 12.9 1236 14.8 1237 15.3 1238 17.5 1239 19.4 1240 20.8 1241 21.7 1242 20.9 1243 19.7 1244 16.1 1245 12.1 1246 13.4 1247 14.1 1248 13.9 1249 14.3 1250 15.4 1251 16.2 1252 15.1 1253 14.5 1254 13.4 1255 9.8 1256 11 1257 12.4 1258 12.6 1259 14.4 1260 15.2 1261 13 1262 10.3 1263 8.5 1264 5.9 1265 2.9 1266 0.8 1267 0 1268 0 1269 1.6 1270 4.6 1271 6.3 1272 8.4 1273 10.4 1274 11.8 1275 12.8 1276 13.8 1277 13.2 1278 12.1 1279 10.8 1280 9.6 1281 7.9 1282 5.8 1283 5.8 1284 6.7 1285 6.2 1286 9.6 1287 12.1 1288 11.3 1289 10.8 1290 10.1 1291 6.3 1292 6.6 1293 6.1 1294 4.1 1295 3.3 1296 5.2 1297 5.2 1298 3.8 1299 4 1300 3.5 1301 1.5 1302 4.3 1303 5 1304 5.1 1305 6.3 1306 6.5 1307 9.4 1308 11.2 1309 10.4 1310 10 1311 7.8 1312 4.3 1313 4.6 1314 4.9 1315 5.9 1316 7.8 1317 7.6 1318 8.2 1319 7.8 1320 5.8 1321 6.8 1322 7.4 1323 6.8 1324 7.1 1325 6.6 1326 6.6 1327 5.9 1328 4.4 1329 4.2 1330 3.3 1331 1.8 1332 4.8 1333 5.9 1334 6.6 1335 8.7 1336 9.9 1337 11.7 1338 12.3 1339 10.4 1340 6.9 1341 6.8 1342 5.5 1343 3.7 1344 4.6 1345 5.7 1346 4.1 1347 7.9 1348 10.4 1349 11.6 1350 13.8 1351 15 1352 15.2 1353 15.3 1354 16.1 1355 17.5 1356 18.4 1357 15.8 1358 13.6 1359 16.2 1360 18.1 1361 20.9 1362 23.7 1363 26.9 1364 30.1 1365 29.8 1366 29.9 1367 27 1368 21.3 1369 25.1 1370 26.3 1371 25.7 1372 27.2 1373 28.5 1374 30.1 1375 28.5 1376 26.9 1377 22.7 1378 16.1 1379 16.4 1380 12.4 1381 18.8 1382 24 1383 22.1 1384 26 1385 26.7 1386 16.5 1387 23.2 1388 22.7 1389 16.9 1390 17.6 1391 20.7 1392 20.4 1393 18.7 1394 19 1395 18.2 1396 14.9 1397 15.4 1398 16.4 1399 16.2 1400 15.6 1401 17.3 1402 21 1403 20 1404 19.1 1405 18.6 1406 14.7 1407 11.5 1408 10.9 1409 10.4 1410 9.3 1411 8.8 1412 9.6 1413 10.3 1414 7.6 1415 6 1416 4 1417 1.8 1418 0 1419 0 1420 0 1421 0 1422 0.4 1423 4.2 1424 6.7 1425 8.8 1426 10.6 1427 11.7 1428 13 1429 15.2 1430 14.9 1431 13.7 1432 12.8 1433 10.8 1434 7.5 1435 7.2 1436 8 1437 7.2 1438 7.7 1439 9.9 1440 10 1441 9 1442 8.6 1443 7.7 1444 6.2 1445 5.6 1446 6.3 1447 6.5 1448 6.5 1449 7.6 1450 6.9 1451 7.6 1452 7.3 1453 5.8 1454 5.8 1455 4.9 1456 1 1457 3.6 1458 5.1 1459 4.9 1460 6.9 1461 7.7 1462 5.2 1463 5.9 1464 5.7 1465 4.4 1466 4.1 1467 2.9 1468 0 1469 1.8 1470 3.7 1471 2.1 1472 6.9 1473 8.5 1474 6.7 1475 5.9 1476 4.9 1477 0.5 1478 4.4 1479 5.9 1480 4.4 1481 4.1 1482 1.9 1483 3 1484 2.8 1485 2.4 1486 5.1 1487 5 1488 2.3 1489 6 1490 8 1491 8.7 1492 11.4 1493 13.1 1494 11.6 1495 8.8 1496 4.9 1497 5.8 1498 5 1499 4.4 1500 6.5 1501 7.1 1502 3.8 1503 8.9 1504 11.2 1505 12.1 1506 15 1507 15.6 1508 13.5 1509 13.4 1510 13 1511 12.4 1512 11.7 1513 9.2 1514 6.2 1515 8.3 1516 10.9 1517 12.9 1518 14.5 1519 11.9 1520 15.8 1521 17.1 1522 16.8 1523 18.3 1524 17.5 1525 11.8 1526 17.1 1527 20.4 1528 20.4 1529 21.9 1530 24 1531 23.8 1532 21.8 1533 18 1534 15.6 1535 15.1 1536 15.7 1537 16.3 1538 17.3 1539 20.7 1540 23.3 1541 22.4 1542 21.3 1543 19.2 1544 14 1545 17.1 1546 20.6 1547 20.7 1548 19.4 1549 17.3 1550 19.5 1551 18.7 1552 16.8 1553 16.7 1554 13.5 1555 7.6 1556 12.3 1557 16 1558 16.4 1559 17.3 1560 16.9 1561 14.1 1562 10.2 1563 13.3 1564 16 1565 15.2 1566 15.7 1567 14.3 1568 10.7 1569 15.3 1570 18 1571 16.4 1572 14.1 1573 15.9 1574 15.8 1575 14.3 1576 15.5 1577 14.1 1578 10.1 1579 13.4 1580 14.9 1581 16 1582 18.2 1583 18.5 1584 18.7 1585 17.2 1586 15.5 1587 14.2 1588 12.4 1589 12.5 1590 13.4 1591 14.1 1592 14.6 1593 16.6 1594 18.6 1595 18.2 1596 19.1 1597 20.4 1598 19.3 1599 16.7 1600 16 1601 16.7 1602 16.3 1603 17.7 1604 24.5 1605 24.1 1606 24.3 1607 26.7 1608 24.1 1609 17.7 1610 19.4 1611 19 1612 16.8 1613 18.6 1614 21.9 1615 21.2 1616 20.8 1617 20.3 1618 18.5 1619 15.5 1620 14.3 1621 13.4 1622 13.7 1623 14.3 1624 15.6 1625 18.4 1626 20.5 1627 18.2 1628 16 1629 15.7 1630 13.7 1631 11.8 1632 11.8 1633 10.5 1634 7.6 1635 10.6 1636 12.8 1637 13.9 1638 15.9 1639 16.5 1640 14.9 1641 13.6 1642 12.1 1643 9.9 1644 7.7 1645 5.3 1646 2.9 1647 2.8 1648 3.3 1649 3.6 1650 3.5 1651 6.3 1652 6.9 1653 5.6 1654 5.6 1655 5 1656 1.2 1657 2.7 1658 3.8 1659 3.5 1660 3.9 1661 4 1662 4.3 1663 3.5 1664 2.2 1665 2.4 1666 1.1 1667 0 1668 1.9 1669 4.8 1670 5.5 1671 6.5 1672 7.9 1673 8.3 1674 8.5 1675 9.8 1676 9.8 1677 8.1 1678 7.2 1679 6 1680 3.7 1681 3.7 1682 4.8 1683 4.4 1684 6.5 1685 8.2 1686 7.7 1687 7.3 1688 6.5 1689 4.9 1690 4.9 1691 4.3 1692 3.6 1693 3.1 1694 4.8 1695 6.2 1696 5.5 1697 5.9 1698 6.7 1699 6.4 1700 6 1701 7.3 1702 7.7 1703 8.2 1704 9.4 1705 10.3 1706 6.2 1707 6 1708 5.6 1709 5.3 1710 4.9 1711 2.8 1712 3.7 1713 4.9 1714 7 1715 11 1716 14 1717 15.5 1718 17.4 1719 17.3 1720 18.5 1721 21.1 1722 18.9 1723 14.8 1724 16.1 1725 17.2 1726 17 1727 19.6 1728 20.8 1729 20 1730 20 1731 19.5 1732 16.6 1733 14 1734 15.2 1735 15.3 1736 16.6 1737 17.7 1738 19.2 1739 20.4 1740 19 1741 16.9 1742 15.4 1743 15.2 1744 11 1745 9.8 1746 13 1747 13.6 1748 13.5 1749 16.8 1750 18.2 1751 16.6 1752 18.3 1753 16.7 1754 13.2 1755 14.1 1756 11.7 1757 14.5 1758 16 1759 14.4 1760 15.8 1761 21.8 1762 21.4 1763 21.4 1764 22.3 1765 18.8 1766 15.4 1767 17 1768 19 1769 18.1 1770 19.6 1771 25.3 1772 26.7 1773 21.9 1774 21.8 1775 16.6 1776 14.8 1777 20.8 1778 21.5 1779 21.3 1780 24.6 1781 26.8 1782 23.8 1783 21.2 1784 18.1 1785 18.4 1786 23.6 1787 24.7 1788 25.1 1789 25.1 1790 23 1791 18.9 1792 15.7 1793 13.6 1794 11.9 1795 8.8 1796 7.9 1797 5.7 1798 5.7 1799 7.2 1800 7.9 1801 9.9 1802 11.7 1803 10.2 1804 9.5 1805 10.4 1806 8.6 1807 4.9 1808 4.7 1809 4.4 1810 1.1 1811 2.8 1812 4.9 1813 6.5 1814 6.6 1815 9.9 1816 12 1817 9.9 1818 10.5 1819 11 1820 10.3 1821 8.5 1822 8.2 1823 8.1 1824 10.8 1825 11.3 1826 13 1827 13.7 1828 16.1 1829 21.6 1830 25.4 1831 24.3 1832 21.9 1833 18.1 1834 17.2 1835 20 1836 23 1837 22 1838 20.6 1839 23.1 1840 22.1 1841 20.3 1842 20.8 1843 15.9 1844 14.5 1845 18.3 1846 18.9 1847 21.9 1848 23.9 1849 20 1850 17.1 1851 19.5 1852 19.6 1853 18.3 1854 15.8 1855 11.8 1856 10 1857 12.9 1858 17.2 1859 19.6 1860 19.2 1861 17.6 1862 20.3 1863 20.4 1864 23.4 1865 20.8 1866 17.7 1867 14.3 1868 18.2 1869 20.9 1870 22.2 1871 21.4 1872 23.7 1873 20.2 1874 14.6 1875 11.3 1876 9.6 1877 9 1878 7.3 1879 7 1880 11.6 1881 13.6 1882 22.9 1883 17.6 1884 14.2 1885 15.4 1886 20.6 1887 16.4 1888 15.4 1889 12.5 1890 10.7 1891 17.1 1892 24.2 1893 17 1894 20.7 1895 18.1 1896 18 1897 13.6 1898 15.1 1899 13.1 1900 7.5 1901 6.1 1902 6.5 1903 12 1904 11.6 1905 15 1906 12.5 1907 16 1908 17.1 1909 17.2 1910 17.6 1911 15.9 1912 8.9 1913 8.6 1914 11 1915 15.6 1916 19.9 1917 18.3 1918 21.6 1919 22.5 1920 17.6 1921 16.6 1922 18.7 1923 10.2 1924 10.2 1925 13.1 1926 19.9 1927 16.6 1928 17.7 1929 19.4 1930 28.6 1931 16.8 1932 19 1933 16.3 1934 13.4 1935 15.6 1936 16.2 1937 19 1938 23.6 1939 23.2 1940 23.5 1941 24.9 1942 21.8 1943 25.9 1944 17.8 1945 16.4 1946 25.3 1947 25.2 1948 22.6 1949 21.2 1950 24.4 1951 28.7 1952 27.8 1953 22.2 1954 17.2 1955 17.6 1956 24.7 1957 29.3 1958 28.4 1959 30.2 1960 32.9 1961 22.4 1962 21.5 1963 21.2 1964 17.2 1965 14 1966 17.3 1967 19.8 1968 22.5 1969 19.9 1970 20 1971 20 1972 20.6 1973 26.7 1974 30.4 1975 23.7 1976 22.2 1977 20.2 1978 25.5 1979 22.4 1980 18 1981 24.4 1982 33.2 1983 29.5 1984 28.9 1985 22.5 1986 21 1987 19 1988 22.6 1989 30.9 1990 26.4 1991 34.3 1992 27.2 1993 25.4 1994 29.3 1995 21.9 1996 18.5 1997 16 1998 21.1 1999 22.3 2000 25.4 2001 22.4 2002 22.7 2003 37.7