Year Measure
1800 961.5
1801 961.5
1802 961.5
1803 961.5
1804 961.5
1805 961.5
1806 961.5
1807 961.5
1808 961.5
1809 961.5
1810 961.5
1811 961.5
1812 961.5
1813 961.5
1814 961.5
1815 961.5
1816 961.5
1817 961.5
1818 961.5
1819 961.5
1820 961.5
1821 967.9
1822 974.3
1823 980.7
1824 987.2
1825 993.7
1826 1000
1827 1007
1828 1014
1829 1020
1830 1027
1831 1034
1832 1041
1833 1047
1834 1054
1835 1061
1836 1068
1837 1075
1838 1083
1839 1090
1840 1097
1841 1104
1842 1111
1843 1119
1844 1126
1845 1134
1846 1141
1847 1149
1848 1156
1849 1164
1850 1172
1851 1179
1852 1187
1853 1195
1854 1203
1855 1211
1856 1219
1857 1227
1858 1235
1859 1243
1860 1251
1861 1260
1862 1268
1863 1276
1864 1285
1865 1293
1866 1302
1867 1310
1868 1319
1869 1328
1870 1337
1871 1345
1872 1354
1873 1363
1874 1372
1875 1381
1876 1390
1877 1400
1878 1409
1879 1418
1880 1428
1881 1437
1882 1446
1883 1456
1884 1466
1885 1475
1886 1485
1887 1495
1888 1505
1889 1515
1890 1525
1891 1535
1892 1545
1893 1555
1894 1565
1895 1576
1896 1586
1897 1597
1898 1607
1899 1618
1900 1629
1901 1639
1902 1650
1903 1661
1904 1672
1905 1683
1906 1694
1907 1705
1908 1717
1909 1728
1910 1739
1911 1751
1912 1762
1913 1774
1914 1801
1915 1827
1916 1855
1917 1882
1918 1910
1919 1939
1920 1968
1921 1997
1922 2027
1923 2057
1924 2087
1925 2118
1926 2150
1927 2182
1928 2215
1929 2247
1930 2281
1931 2315
1932 2349
1933 2384
1934 2420
1935 2456
1936 2493
1937 2530
1938 2567
1939 2606
1940 2644
1941 2684
1942 2724
1943 2764
1944 2805
1945 2847
1946 2890
1947 2933
1948 2976
1949 3021
1950 3066
1951 3221
1952 3384
1953 3556
1954 3736
1955 3925
1956 4124
1957 4333
1958 4553
1959 4783
1960 5026
1961 5396
1962 5861
1963 5539
1964 5791
1965 6430
1966 6667
1967 7358
1968 7848
1969 8412
1970 9175
1971 9272
1972 9309
1973 9438
1974 10650
1975 10380
1976 10780
1977 11160
1978 11690
1979 12570
1980 13090
1981 12760
1982 12030
1983 11980
1984 12280
1985 12300
1986 12810
1987 13020
1988 13360
1989 13720
1990 13180
1991 12560
1992 11590
1993 11620
1994 12030
1995 12290
1996 12620
1997 13130
1998 13890
1999 13900
2000 14150
2001 13730
2002 13740
2003 13960
2004 14420
2005 14960
2006 15780
2007 16000
2008 16020
2009 15330
2010 15330
2011 15370
2012 15340
2013 15190
2014 14970
2015 15070
2016 15270
2017 15510
2018 15830
2019 16160