Year Measure
1800 860
1801 860.6
1802 861.1
1803 861.7
1804 862.2
1805 862.8
1806 863.4
1807 863.9
1808 864.5
1809 865
1810 865.6
1811 866.2
1812 866.7
1813 867.3
1814 867.9
1815 868.4
1816 869
1817 869.5
1818 870.1
1819 870.7
1820 871.2
1821 871.8
1822 872.4
1823 872.9
1824 873.5
1825 874.1
1826 874.6
1827 875.2
1828 875.8
1829 876.3
1830 876.9
1831 877.5
1832 878.1
1833 878.6
1834 879.2
1835 879.8
1836 880.3
1837 880.9
1838 881.5
1839 882.1
1840 882.6
1841 883.2
1842 883.8
1843 884.4
1844 884.9
1845 885.5
1846 886.1
1847 886.7
1848 887.2
1849 887.8
1850 888.4
1851 889
1852 889.5
1853 890.1
1854 890.7
1855 891.3
1856 891.8
1857 892.4
1858 893
1859 893.6
1860 894.2
1861 894.8
1862 895.3
1863 895.9
1864 896.5
1865 897.1
1866 897.7
1867 898.2
1868 898.8
1869 899.4
1870 900
1871 901.9
1872 903.7
1873 905.6
1874 907.5
1875 909.4
1876 911.2
1877 913.1
1878 915
1879 916.9
1880 918.8
1881 920.7
1882 922.6
1883 924.6
1884 926.5
1885 928.4
1886 930.3
1887 932.2
1888 934.2
1889 936.1
1890 938.1
1891 940
1892 936.7
1893 942.6
1894 929.9
1895 935.8
1896 904.7
1897 910.3
1898 907
1899 903.6
1900 882.4
1901 853
1902 898.6
1903 920.1
1904 960.2
1905 983.1
1906 1055
1907 1090
1908 1106
1909 1165
1910 1158
1911 1379
1912 1367
1913 1434
1914 1421
1915 1671
1916 1559
1917 1711
1918 1363
1919 2384
1920 1853
1921 1854
1922 2195
1923 2321
1924 2478
1925 2405
1926 2450
1927 2234
1928 2298
1929 2341
1930 1976
1931 2013
1932 2057
1933 2103
1934 2149
1935 2218
1936 2288
1937 2360
1938 2114
1939 2057
1940 2002
1941 1948
1942 1896
1943 1844
1944 1795
1945 1746
1946 1512
1947 1295
1948 1348
1949 1479
1950 1751
1951 1769
1952 1692
1953 1876
1954 2056
1955 1872
1956 2222
1957 1981
1958 2136
1959 2185
1960 2284
1961 2300
1962 2346
1963 2360
1964 2343
1965 2308
1966 2244
1967 2218
1968 2184
1969 2244
1970 2456
1971 2527
1972 2394
1973 2455
1974 2554
1975 2185
1976 2067
1977 2079
1978 2218
1979 2121
1980 2080
1981 1950
1982 1756
1983 1618
1984 1698
1985 1728
1986 1764
1987 1798
1988 1849
1989 1891
1990 1901
1991 1946
1992 1965
1993 2002
1994 2012
1995 2038
1996 2079
1997 2115
1998 2162
1999 2206
2000 2244
2001 2291
2002 2343
2003 2406
2004 2474
2005 2564
2006 2616
2007 2719
2008 2878
2009 2941
2010 3063
2011 3446
2012 3626
2013 3728
2014 3808
2015 3914
2016 4126
2017 4323
2018 4500
2019 4556