Year Measure
1800 884.7
1801 883.7
1802 882.7
1803 881.7
1804 880.6
1805 879.6
1806 878.6
1807 877.6
1808 876.6
1809 875.5
1810 874.5
1811 873.5
1812 872.5
1813 871.5
1814 870.5
1815 869.4
1816 868.4
1817 867.4
1818 866.4
1819 865.4
1820 864.4
1821 863.4
1822 862.4
1823 861.4
1824 860.4
1825 859.4
1826 858.4
1827 857.4
1828 856.4
1829 855.4
1830 854.4
1831 853.4
1832 852.4
1833 851.4
1834 850.5
1835 849.5
1836 848.5
1837 847.5
1838 846.5
1839 845.5
1840 844.5
1841 843.6
1842 842.6
1843 841.6
1844 840.6
1845 839.6
1846 838.7
1847 837.7
1848 836.7
1849 835.7
1850 834.8
1851 833.8
1852 832.8
1853 831.9
1854 830.9
1855 829.9
1856 829
1857 828
1858 827.1
1859 826.1
1860 825.1
1861 824.2
1862 823.2
1863 822.3
1864 821.3
1865 820.3
1866 819.4
1867 818.4
1868 817.5
1869 816.5
1870 815.6
1871 814.6
1872 813.7
1873 812.8
1874 811.8
1875 810.9
1876 809.9
1877 809
1878 808
1879 807.1
1880 806.2
1881 805.2
1882 804.3
1883 803.4
1884 802.4
1885 801.5
1886 800.6
1887 799.6
1888 798.7
1889 797.8
1890 796.8
1891 795.9
1892 795
1893 794.1
1894 793.1
1895 792.2
1896 791.3
1897 790.4
1898 789.5
1899 788.6
1900 787.6
1901 790.2
1902 792.8
1903 795.3
1904 797.9
1905 800.5
1906 803.1
1907 805.7
1908 808.3
1909 811
1910 813.6
1911 816.2
1912 841.6
1913 864.5
1914 893.8
1915 1035
1916 1002
1917 1097
1918 1169
1919 1232
1920 1060
1921 1130
1922 1026
1923 1086
1924 1080
1925 1067
1926 1094
1927 1128
1928 1123
1929 1051
1930 983
1931 976.7
1932 966.8
1933 1156
1934 1142
1935 1231
1936 1331
1937 1457
1938 1520
1939 1361
1940 1524
1941 1533
1942 1513
1943 1523
1944 1446
1945 674
1946 682.3
1947 719.8
1948 774.8
1949 832.2
1950 874.3
1951 811.9
1952 868.2
1953 1123
1954 1137
1955 1206
1956 1191
1957 1287
1958 1289
1959 1263
1960 1222
1961 1242
1962 1219
1963 1342
1964 1416
1965 1449
1966 1594
1967 1650
1968 1801
1969 2025
1970 2167
1971 2454
1972 2790
1973 3361
1974 3711
1975 4149
1976 4658
1977 5010
1978 5421
1979 5553
1980 4940
1981 5201
1982 5526
1983 6124
1984 6660
1985 7019
1986 8050
1987 9154
1988 10300
1989 11070
1990 12160
1991 13390
1992 14260
1993 15370
1994 16920
1995 18580
1996 19540
1997 20370
1998 19470
1999 21080
2000 22310
2001 23060
2002 24830
2003 25590
2004 26640
2005 27370
2006 28290
2007 29550
2008 29080
2009 29200
2010 30990
2011 31330
2012 31820
2013 32570
2014 33630
2015 34760
2016 35910
2017 37120
2018 38350
2019 39620