Year Measure
1800 791.6
1801 794
1802 796.4
1803 798.8
1804 801.2
1805 803.6
1806 806.1
1807 808.5
1808 810.9
1809 813.4
1810 815.8
1811 818.3
1812 820.8
1813 823.2
1814 825.7
1815 828.2
1816 830.7
1817 833.2
1818 835.7
1819 838.3
1820 840.8
1821 843.3
1822 845.9
1823 848.4
1824 851
1825 853.6
1826 856.1
1827 858.7
1828 861.3
1829 863.9
1830 866.5
1831 869.1
1832 871.8
1833 874.4
1834 877
1835 879.7
1836 882.3
1837 885
1838 887.7
1839 890.3
1840 893
1841 895.7
1842 898.4
1843 901.1
1844 903.9
1845 906.6
1846 909.3
1847 912.1
1848 914.8
1849 917.6
1850 920.4
1851 923.1
1852 925.9
1853 928.7
1854 931.5
1855 934.3
1856 937.2
1857 940
1858 942.8
1859 945.7
1860 948.5
1861 951.4
1862 954.3
1863 957.1
1864 960
1865 962.9
1866 965.8
1867 968.8
1868 971.7
1869 974.6
1870 977.6
1871 980.5
1872 983.5
1873 986.4
1874 989.4
1875 992.4
1876 995.4
1877 998.4
1878 1001
1879 1004
1880 1007
1881 1011
1882 1014
1883 1017
1884 1020
1885 1023
1886 1026
1887 1029
1888 1032
1889 1035
1890 1038
1891 1041
1892 1045
1893 1048
1894 1051
1895 1054
1896 1057
1897 1060
1898 1064
1899 1067
1900 1070
1901 1073
1902 1077
1903 1080
1904 1083
1905 1086
1906 1090
1907 1093
1908 1096
1909 1099
1910 1103
1911 1106
1912 1109
1913 1113
1914 1145
1915 1179
1916 1214
1917 1249
1918 1286
1919 1323
1920 1362
1921 1402
1922 1443
1923 1485
1924 1529
1925 1574
1926 1620
1927 1667
1928 1716
1929 1766
1930 1818
1931 1871
1932 1926
1933 1982
1934 2041
1935 2100
1936 2162
1937 2225
1938 2290
1939 2357
1940 2427
1941 2498
1942 2571
1943 2646
1944 2724
1945 2803
1946 2886
1947 2970
1948 3057
1949 3147
1950 3239
1951 3338
1952 3356
1953 3401
1954 3504
1955 3524
1956 3567
1957 3602
1958 3595
1959 3696
1960 3826
1961 3851
1962 3798
1963 3831
1964 3797
1965 3789
1966 3804
1967 3797
1968 3771
1969 3763
1970 4469
1971 4626
1972 4644
1973 4719
1974 4492
1975 4461
1976 4653
1977 3874
1978 3724
1979 3644
1980 3588
1981 3615
1982 3620
1983 3548
1984 3891
1985 3798
1986 3708
1987 3621
1988 3448
1989 3245
1990 3127
1991 3066
1992 2989
1993 2806
1994 2715
1995 2580
1996 2423
1997 2382
1998 2358
1999 2390
2000 2381
2001 2388
2002 2399
2003 2428
2004 2442
2005 2469
2006 2516
2007 2572
2008 2647
2009 2705
2010 2723
2011 2767
2012 2822
2013 2882
2014 2972
2015 3078
2016 3188
2017 3303
2018 3406
2019 3505