Year Measure
1800 871.4
1801 871.4
1802 871.4
1803 871.4
1804 871.4
1805 871.4
1806 871.4
1807 871.4
1808 871.4
1809 871.4
1810 871.4
1811 871.4
1812 871.4
1813 871.4
1814 871.4
1815 871.4
1816 871.4
1817 871.4
1818 871.4
1819 871.4
1820 871.4
1821 871.4
1822 871.4
1823 871.4
1824 871.4
1825 871.4
1826 871.4
1827 871.4
1828 871.4
1829 871.4
1830 871.4
1831 871.4
1832 871.4
1833 871.4
1834 871.4
1835 871.4
1836 871.4
1837 871.4
1838 871.4
1839 871.4
1840 871.4
1841 871.4
1842 871.4
1843 871.4
1844 871.4
1845 871.4
1846 871.4
1847 871.4
1848 871.4
1849 871.4
1850 871.4
1851 871.4
1852 871.4
1853 871.4
1854 871.4
1855 871.4
1856 871.4
1857 871.4
1858 871.4
1859 871.4
1860 871.4
1861 871.4
1862 871.4
1863 871.4
1864 871.4
1865 871.4
1866 871.4
1867 871.4
1868 871.4
1869 871.4
1870 871.4
1871 873.6
1872 875.8
1873 877.9
1874 880.1
1875 882.3
1876 884.5
1877 886.7
1878 888.9
1879 891.2
1880 893.4
1881 895.6
1882 897.9
1883 900.1
1884 902.3
1885 904.6
1886 906.9
1887 909.1
1888 911.4
1889 913.7
1890 915.9
1891 918.2
1892 920.5
1893 922.8
1894 925.1
1895 927.4
1896 929.7
1897 932.1
1898 934.4
1899 936.7
1900 939.1
1901 941.4
1902 943.8
1903 946.1
1904 948.5
1905 950.8
1906 953.2
1907 955.6
1908 958
1909 960.4
1910 962.8
1911 965.2
1912 967.6
1913 970
1914 924.4
1915 880.9
1916 839.5
1917 800
1918 827.5
1919 855.9
1920 885.3
1921 915.8
1922 947.2
1923 909.7
1924 1013
1925 994.1
1926 1041
1927 1116
1928 937.9
1929 1041
1930 1060
1931 1069
1932 1041
1933 1041
1934 1360
1935 1660
1936 1510
1937 1707
1938 1454
1939 1397
1940 1435
1941 1566
1942 1773
1943 1829
1944 1876
1945 1960
1946 2185
1947 2317
1948 1801
1949 1400
1950 1470
1951 1544
1952 1622
1953 1632
1954 1643
1955 1654
1956 1665
1957 1676
1958 1687
1959 1698
1960 1709
1961 1721
1962 1732
1963 1743
1964 1755
1965 1767
1966 1778
1967 1790
1968 1802
1969 2006
1970 2162
1971 2405
1972 2752
1973 2528
1974 3040
1975 2972
1976 3397
1977 3294
1978 3650
1979 3628
1980 4129
1981 3801
1982 3999
1983 3724
1984 3800
1985 3657
1986 4228
1987 3987
1988 3857
1989 3778
1990 4359
1991 3903
1992 4594
1993 4854
1994 5242
1995 5314
1996 5228
1997 5632
1998 6095
1999 6404
2000 5841
2001 4808
2002 4174
2003 4278
2004 4391
2005 4506
2006 4193
2007 4015
2008 3564
2009 4187
2010 4163
2011 4359
2012 4834
2013 4484