Year Measure
1800 698.2
1801 698.2
1802 698.2
1803 698.2
1804 698.2
1805 698.2
1806 698.2
1807 698.2
1808 698.2
1809 698.2
1810 698.2
1811 698.2
1812 698.2
1813 698.2
1814 698.2
1815 698.2
1816 698.2
1817 698.2
1818 698.2
1819 698.2
1820 698.2
1821 698.3
1822 698.4
1823 698.5
1824 698.6
1825 698.6
1826 698.7
1827 698.8
1828 698.9
1829 699
1830 699.1
1831 699.2
1832 699.3
1833 699.4
1834 699.5
1835 699.6
1836 699.7
1837 699.8
1838 699.9
1839 700
1840 700
1841 700.1
1842 700.2
1843 700.3
1844 700.4
1845 700.5
1846 700.6
1847 700.7
1848 700.8
1849 700.9
1850 701
1851 701.1
1852 701.2
1853 701.3
1854 701.4
1855 701.5
1856 701.5
1857 701.6
1858 701.7
1859 701.8
1860 701.9
1861 702
1862 702.1
1863 702.2
1864 702.3
1865 702.4
1866 702.5
1867 702.6
1868 702.7
1869 702.8
1870 702.9
1871 705.5
1872 708.2
1873 710.9
1874 713.6
1875 716.4
1876 719.1
1877 721.8
1878 724.6
1879 727.4
1880 730.1
1881 732.9
1882 735.7
1883 738.5
1884 741.4
1885 744.2
1886 747
1887 749.9
1888 752.7
1889 755.6
1890 758.5
1891 761.4
1892 764.3
1893 767.2
1894 770.1
1895 773.1
1896 776
1897 779
1898 782
1899 784.9
1900 787.9
1901 790.9
1902 794
1903 797
1904 800
1905 803.1
1906 806.1
1907 809.2
1908 812.3
1909 815.4
1910 818.5
1911 821.6
1912 847.1
1913 870.3
1914 899.8
1915 1042
1916 1008
1917 1104
1918 1177
1919 1240
1920 1067
1921 1137
1922 1033
1923 1093
1924 1087
1925 1074
1926 1102
1927 1136
1928 1130
1929 1058
1930 989.5
1931 983.2
1932 973.3
1933 1164
1934 1149
1935 1239
1936 1340
1937 1466
1938 1529
1939 1368
1940 1531
1941 1539
1942 1517
1943 1527
1944 1448
1945 674.4
1946 682.2
1947 719
1948 773.1
1949 829.5
1950 870.5
1951 727.4
1952 777.4
1953 1004
1954 1059
1955 1109
1956 1097
1957 1158
1958 1193
1959 1209
1960 1200
1961 1229
1962 1234
1963 1313
1964 1396
1965 1452
1966 1597
1967 1684
1968 1866
1969 2115
1970 2262
1971 2938
1972 3002
1973 3332
1974 3373
1975 3373
1976 3373
1977 3373
1978 3373
1979 3373
1980 3373
1981 3373
1982 3373
1983 3373
1984 3373
1985 3373
1986 3373
1987 3373
1988 3373
1989 3373
1990 3373
1991 3373
1992 3061
1993 3018
1994 2300
1995 2000
1996 1809
1997 1691
1998 1693
1999 1706
2000 1690
2001 1667
2002 1647
2003 1628
2004 1612
2005 1597
2006 1571
2007 1544
2008 1585
2009 1563
2010 1549
2011 1540
2012 1540