Year Measure
1800 702.1
1820 702.1
1821 671.3
1822 674.9
1823 672.2
1824 655.8
1825 675.3
1826 680.4
1827 683.3
1828 678.3
1829 682.3
1830 671.7
1831 670.8
1832 679.5
1833 676.8
1834 691.3
1835 706.8
1836 701.5
1837 718.1
1838 721.2
1839 722.5
1840 759.9
1841 761.1
1842 769.8
1843 784.8
1844 787.7
1845 802.7
1846 821
1847 829.8
1848 855
1849 906.1
1850 942.9
1851 959
1852 977.8
1853 946.8
1854 964.4
1855 998.5
1856 1000
1857 1023
1858 1057
1859 1081
1860 1107
1861 1096
1862 1081
1863 1112
1864 1159
1865 1186
1866 1200
1867 1141
1868 1186
1869 1292
1870 1306
1871 1289
1872 1365
1873 1434
1874 1353
1875 1443
1876 1407
1877 1341
1878 1401
1879 1591
1880 1761
1881 1796
1882 1918
1883 1902
1884 1892
1885 1809
1886 1859
1887 1962
1888 1858
1889 1881
1890 1990
1891 2124
1892 2054
1893 2128
1894 2067
1895 2184
1896 2169
1897 2095
1898 2320
1899 2306
1900 2220
1901 2249
1902 2320
1903 2165
1904 2315
1905 2286
1906 2437
1907 2538
1908 2776
1909 2759
1910 3036
1911 2921
1912 3004
1913 3024
1914 2527
1915 2418
1916 2930
1917 2959
1918 2961
1919 2510
1920 2802
1921 2398
1922 2455
1923 2919
1924 3099
1925 3190
1926 2885
1927 2793
1928 3373
1929 3497
1930 2893
1931 2244
1932 1867
1933 2263
1934 2688
1935 2795
1936 2882
1937 3220
1938 3199
1939 3207
1940 3275
1941 3179
1942 3265
1943 3295
1944 3295
1945 3513
1946 3744
1947 3279
1948 3757
1949 3612
1950 3714
1951 3776
1952 3940
1953 4162
1954 3954
1955 4023
1956 4005
1957 4316
1958 4445
1959 4091
1960 4322
1961 4419
1962 4519
1963 4695
1964 4694
1965 4632
1966 5045
1967 5107
1968 5189
1969 5283
1970 5295
1971 5665
1972 5494
1973 5094
1974 5052
1975 4325
1976 4399
1977 4757
1978 5071
1979 5409
1980 5749
1981 6004
1982 5096
1983 4868
1984 5071
1985 5091
1986 5291
1987 5547
1988 5851
1989 6359
1990 6479
1991 6877
1992 7596
1993 8001
1994 8501
1995 9082
1996 9620
1997 10120
1998 10310
1999 10110
2000 10440
2001 10670
2002 10780
2003 11080
2004 11650
2005 12260
2006 12850
2007 13380
2008 13650
2009 13400
2010 14040
2011 14740
2012 15400
2013 16020
2014 16620
2015 17230
2016 17890
2017 18570
2018 19280