Year Measure
1800 891.7
1801 891.7
1802 891.7
1803 891.7
1804 891.7
1805 891.7
1806 891.7
1807 891.7
1808 891.7
1809 891.7
1810 891.7
1811 891.7
1812 891.7
1813 891.7
1814 891.7
1815 891.7
1816 891.7
1817 891.7
1818 891.7
1819 891.7
1820 891.7
1821 901.7
1822 911.7
1823 921.9
1824 932.2
1825 942.7
1826 953.2
1827 963.9
1828 974.6
1829 985.5
1830 996.6
1831 1008
1832 1019
1833 1030
1834 1042
1835 1054
1836 1065
1837 1077
1838 1089
1839 1101
1840 1114
1841 1126
1842 1139
1843 1152
1844 1164
1845 1177
1846 1191
1847 1204
1848 1217
1849 1231
1850 1245
1851 1259
1852 1273
1853 1287
1854 1301
1855 1316
1856 1331
1857 1345
1858 1361
1859 1376
1860 1391
1861 1407
1862 1422
1863 1438
1864 1454
1865 1471
1866 1487
1867 1504
1868 1521
1869 1538
1870 1555
1871 1572
1872 1590
1873 1607
1874 1625
1875 1644
1876 1662
1877 1681
1878 1699
1879 1718
1880 1738
1881 1757
1882 1777
1883 1797
1884 1817
1885 1837
1886 1857
1887 1878
1888 1899
1889 1920
1890 1942
1891 1964
1892 1986
1893 2008
1894 2030
1895 2053
1896 2076
1897 2099
1898 2123
1899 2146
1900 2170
1901 2195
1902 2219
1903 2244
1904 2269
1905 2294
1906 2320
1907 2346
1908 2372
1909 2399
1910 2426
1911 2453
1912 2480
1913 2508
1914 2536
1915 2564
1916 2593
1917 2622
1918 2651
1919 2681
1920 2711
1921 2741
1922 2772
1923 2803
1924 2834
1925 2866
1926 2898
1927 2930
1928 2963
1929 2996
1930 3030
1931 3064
1932 3098
1933 3132
1934 3167
1935 3203
1936 3239
1937 3275
1938 3312
1939 3349
1940 3386
1941 3424
1942 3462
1943 3501
1944 3540
1945 3580
1946 3651
1947 3728
1948 3430
1949 3441
1950 3247
1951 3137
1952 3221
1953 3337
1954 3377
1955 3482
1956 3572
1957 3846
1958 3797
1959 3934
1960 4052
1961 4361
1962 4593
1963 4883
1964 4948
1965 5228
1966 5455
1967 5741
1968 5984
1969 6268
1970 6462
1971 6797
1972 6966
1973 7202
1974 7171
1975 7114
1976 7061
1977 6950
1978 7497
1979 7655
1980 8627
1981 8802
1982 9103
1983 8982
1984 8761
1985 8988
1986 9095
1987 9135
1988 7560
1989 7384
1990 7576
1991 8099
1992 8595
1993 8883
1994 8989
1995 8987
1996 9027
1997 9238
1998 9422
1999 9551
2000 9617
2001 9502
2002 9552
2003 9805
2004 10370
2005 10910
2006 11640
2007 12810
2008 13860
2009 14140
2010 14930
2011 16250
2012 17690
2013 18770
2014 19760
2015 20750
2016 21690
2017 22630
2018 23540
2019 24910