Year Measure
1800 960.3
1801 960.3
1802 960.3
1803 960.3
1804 960.3
1805 960.3
1806 960.3
1807 960.3
1808 960.3
1809 960.3
1810 960.3
1811 960.3
1812 960.3
1813 960.3
1814 960.3
1815 960.3
1816 960.3
1817 960.3
1818 960.3
1819 960.3
1820 960.3
1821 918.1
1822 923.1
1823 919.4
1824 897.1
1825 923.7
1826 930.6
1827 934.7
1828 927.8
1829 933.2
1830 918.8
1831 917.5
1832 929.4
1833 925.8
1834 945.6
1835 966.8
1836 959.5
1837 982.2
1838 986.5
1839 988.2
1840 1039
1841 1041
1842 1053
1843 1073
1844 1077
1845 1098
1846 1123
1847 1135
1848 1169
1849 1239
1850 1290
1851 1312
1852 1337
1853 1295
1854 1319
1855 1366
1856 1368
1857 1399
1858 1446
1859 1479
1860 1514
1861 1499
1862 1479
1863 1520
1864 1585
1865 1623
1866 1641
1867 1561
1868 1622
1869 1767
1870 1786
1871 1763
1872 1867
1873 1961
1874 1851
1875 1974
1876 1924
1877 1835
1878 1917
1879 2176
1880 2409
1881 2457
1882 2623
1883 2602
1884 2587
1885 2475
1886 2543
1887 2683
1888 2542
1889 2572
1890 2722
1891 2905
1892 2810
1893 2911
1894 2827
1895 2987
1896 2966
1897 2865
1898 3173
1899 3155
1900 3037
1901 3077
1902 3174
1903 2961
1904 3167
1905 3127
1906 3334
1907 3471
1908 3796
1909 3773
1910 4153
1911 3996
1912 4108
1913 4137
1914 3456
1915 3307
1916 4008
1917 4047
1918 4050
1919 3434
1920 3832
1921 3280
1922 3358
1923 3993
1924 4238
1925 4364
1926 3946
1927 3820
1928 4613
1929 4783
1930 3957
1931 3070
1932 2553
1933 3096
1934 3676
1935 3822
1936 3942
1937 4404
1938 4376
1939 4387
1940 4480
1941 4348
1942 4465
1943 4507
1944 4507
1945 4805
1946 5121
1947 4485
1948 5138
1949 4940
1950 5080
1951 5165
1952 5389
1953 5692
1954 5409
1955 5503
1956 5477
1957 5903
1958 6079
1959 5595
1960 5911
1961 6044
1962 6181
1963 6422
1964 6421
1965 6336
1966 6900
1967 6985
1968 7098
1969 7227
1970 7242
1971 7748
1972 7515
1973 6968
1974 6910
1975 5915
1976 6017
1977 6506
1978 6936
1979 7398
1980 7863
1981 8212
1982 6970
1983 6659
1984 6936
1985 6963
1986 7237
1987 7587
1988 8003
1989 8698
1990 8861
1991 9407
1992 10390
1993 10940
1994 11630
1995 12420
1996 13160
1997 13840
1998 14100
1999 13820
2000 14270
2001 14590
2002 14740
2003 15160
2004 15930
2005 16770
2006 17570
2007 18300
2008 18670
2009 18330
2010 19200
2011 20150
2012 21060
2013 21760
2014 22360
2015 23060
2016 23850
2017 24740
2018 25660
2019 26610