Year Measure
1800 650
1801 652.8
1802 655.5
1803 658.3
1804 661.1
1805 663.9
1806 666.8
1807 669.6
1808 672.4
1809 675.3
1810 678.2
1811 681.1
1812 684
1813 686.9
1814 689.8
1815 692.7
1816 695.7
1817 698.6
1818 701.6
1819 704.6
1820 707.6
1821 710.6
1822 713.6
1823 716.6
1824 719.7
1825 722.8
1826 725.8
1827 728.9
1828 732
1829 735.1
1830 738.3
1831 741.4
1832 744.6
1833 747.7
1834 750.9
1835 754.1
1836 757.3
1837 760.5
1838 763.8
1839 767
1840 770.3
1841 773.5
1842 776.8
1843 780.1
1844 783.5
1845 786.8
1846 790.1
1847 793.5
1848 796.9
1849 800.3
1850 803.7
1851 807.1
1852 810.5
1853 814
1854 817.4
1855 820.9
1856 824.4
1857 827.9
1858 831.4
1859 834.9
1860 838.5
1861 842.1
1862 845.6
1863 849.2
1864 852.9
1865 856.5
1866 860.1
1867 863.8
1868 867.5
1869 871.1
1870 874.9
1871 878.6
1872 882.3
1873 886.1
1874 889.8
1875 893.6
1876 897.4
1877 901.2
1878 905.1
1879 908.9
1880 912.8
1881 916.7
1882 920.6
1883 924.5
1884 928.4
1885 932.4
1886 936.3
1887 940.3
1888 944.3
1889 948.3
1890 952.4
1891 956.4
1892 960.5
1893 964.6
1894 968.7
1895 972.8
1896 976.9
1897 981.1
1898 985.2
1899 989.4
1900 993.6
1901 997.9
1902 1002
1903 1006
1904 1011
1905 1015
1906 1019
1907 1024
1908 1028
1909 1032
1910 1037
1911 1041
1912 1046
1913 1050
1914 1081
1915 1113
1916 1146
1917 1180
1918 1215
1919 1251
1920 1288
1921 1326
1922 1365
1923 1405
1924 1447
1925 1490
1926 1534
1927 1579
1928 1626
1929 1674
1930 1724
1931 1775
1932 1827
1933 1881
1934 1937
1935 1994
1936 2053
1937 2114
1938 2176
1939 2241
1940 2307
1941 2375
1942 2446
1943 2518
1944 2593
1945 2669
1946 2748
1947 2830
1948 2913
1949 2999
1950 3088
1951 3160
1952 3233
1953 3305
1954 3169
1955 3372
1956 3259
1957 3515
1958 3642
1959 3598
1960 3679
1961 4099
1962 3920
1963 4053
1964 4432
1965 4685
1966 4874
1967 5072
1968 4910
1969 4966
1970 5190
1971 5391
1972 5285
1973 5585
1974 5625
1975 5211
1976 4813
1977 4723
1978 4351
1979 4238
1980 4218
1981 3897
1982 3760
1983 3780
1984 3872
1985 3884
1986 3897
1987 4065
1988 4188
1989 4098
1990 3969
1991 3888
1992 3545
1993 2607
1994 2559
1995 2855
1996 3330
1997 3420
1998 3330
1999 3343
2000 3341
2001 3335
2002 3691
2003 3682
2004 3956
2005 4613
2006 5304
2007 6342
2008 7013
2009 6980
2010 7022
2011 7094
2012 7245
2013 7319
2014 7483
2015 7667
2016 7880
2017 7900
2018 8174
2019 8464