Year Measure
1800 583
1801 583
1802 583
1803 583
1804 583
1805 583
1806 583
1807 583
1808 583
1809 583
1810 583
1811 583
1812 583
1813 583
1814 583
1815 583
1816 583
1817 583
1818 583
1819 583
1820 583
1821 585.7
1822 588.5
1823 591.2
1824 594
1825 596.8
1826 599.6
1827 602.4
1828 605.2
1829 608
1830 610.9
1831 613.7
1832 616.6
1833 619.5
1834 622.4
1835 625.3
1836 628.2
1837 631.2
1838 634.1
1839 637.1
1840 640.1
1841 643.1
1842 646.1
1843 649.1
1844 652.1
1845 655.2
1846 658.2
1847 661.3
1848 664.4
1849 667.5
1850 670.7
1851 673.8
1852 676.9
1853 680.1
1854 683.3
1855 686.5
1856 689.7
1857 692.9
1858 696.2
1859 699.4
1860 702.7
1861 706
1862 709.3
1863 712.6
1864 716
1865 719.3
1866 722.7
1867 726.1
1868 729.5
1869 732.9
1870 736.3
1871 739.7
1872 743.2
1873 746.7
1874 750.2
1875 753.7
1876 757.2
1877 760.8
1878 764.3
1879 767.9
1880 771.5
1881 775.1
1882 778.7
1883 782.4
1884 786
1885 789.7
1886 793.4
1887 797.1
1888 800.8
1889 804.6
1890 808.4
1891 812.1
1892 815.9
1893 819.8
1894 823.6
1895 827.5
1896 831.3
1897 835.2
1898 839.1
1899 843.1
1900 847
1901 851
1902 854.9
1903 858.9
1904 863
1905 867
1906 871.1
1907 875.1
1908 879.2
1909 883.3
1910 887.5
1911 891.6
1912 895.8
1913 900
1914 940
1915 981.8
1916 1025
1917 1071
1918 1119
1919 1168
1920 1220
1921 1275
1922 1331
1923 1390
1924 1452
1925 1517
1926 1584
1927 1655
1928 1728
1929 1805
1930 1885
1931 1969
1932 2057
1933 2148
1934 2244
1935 2343
1936 2448
1937 2556
1938 2670
1939 2789
1940 2913
1941 3042
1942 3177
1943 3319
1944 3466
1945 3620
1946 3781
1947 3949
1948 4125
1949 4308
1950 4500
1951 5111
1952 5806
1953 6595
1954 7491
1955 8509
1956 9665
1957 10980
1958 12470
1959 14160
1960 16090
1961 18270
1962 20760
1963 23580
1964 26780
1965 30420
1966 34550
1967 39250
1968 44580
1969 50640
1970 57520
1971 58060
1972 58640
1973 59290
1974 60050
1975 60930
1976 58510
1977 56240
1978 54080
1979 51980
1980 49870
1981 47770
1982 45690
1983 43640
1984 41600
1985 39610
1986 37650
1987 35760
1988 33950
1989 32240
1990 30650
1991 24300
1992 19950
1993 16430
1994 15560
1995 14180
1996 12420
1997 10990
1998 9952
1999 9308
2000 8671
2001 8076
2002 7257
2003 7261
2004 6936
2005 6097
2006 4897
2007 4925
2008 9657
2009 7920
2010 9523
2011 10880
2012 13070
2013 13570