Year Measure
1800 596
1801 596
1802 596
1803 596
1804 596
1805 596
1806 596
1807 596
1808 596
1809 596
1810 596
1811 596
1812 596
1813 596
1814 596
1815 596
1816 596
1817 596
1818 596
1819 596
1820 596
1821 596.1
1822 596.2
1823 596.2
1824 596.3
1825 596.4
1826 596.5
1827 596.6
1828 596.6
1829 596.7
1830 596.8
1831 596.9
1832 597
1833 597
1834 597.1
1835 597.2
1836 597.3
1837 597.4
1838 597.4
1839 597.5
1840 597.6
1841 597.7
1842 597.8
1843 597.8
1844 597.9
1845 598
1846 598.1
1847 598.2
1848 598.2
1849 598.3
1850 598.4
1851 598.5
1852 598.6
1853 598.6
1854 598.7
1855 598.8
1856 598.9
1857 599
1858 599
1859 599.1
1860 599.2
1861 599.3
1862 599.4
1863 599.4
1864 599.5
1865 599.6
1866 599.7
1867 599.8
1868 599.8
1869 599.9
1870 600
1871 602.3
1872 604.6
1873 606.9
1874 609.2
1875 611.5
1876 613.9
1877 616.2
1878 618.6
1879 620.9
1880 623.3
1881 625.7
1882 628.1
1883 630.5
1884 632.9
1885 635.3
1886 637.7
1887 640.1
1888 642.6
1889 645
1890 647.5
1891 650
1892 652.4
1893 654.9
1894 657.4
1895 659.9
1896 662.5
1897 665
1898 667.5
1899 670.1
1900 672.6
1901 675.2
1902 677.8
1903 680.4
1904 682.9
1905 685.6
1906 688.2
1907 690.8
1908 693.4
1909 696.1
1910 698.7
1911 701.4
1912 723.2
1913 742.9
1914 768.1
1915 889.2
1916 860.9
1917 942.4
1918 1005
1919 1058
1920 910.5
1921 971
1922 881.6
1923 933.1
1924 928
1925 917.2
1926 940.3
1927 969.4
1928 964.8
1929 902.9
1930 844.7
1931 839.3
1932 830.8
1933 993.4
1934 981.1
1935 1058
1936 1144
1937 1251
1938 1305
1939 1168
1940 1307
1941 1314
1942 1295
1943 1303
1944 1236
1945 575.7
1946 582.4
1947 613.8
1948 660
1949 708.1
1950 743.1
1951 689.3
1952 736.2
1953 950.5
1954 1003
1955 1050
1956 1039
1957 1097
1958 1130
1959 1145
1960 1137
1961 1163
1962 1169
1963 1243
1964 1322
1965 1375
1966 1512
1967 1594
1968 1768
1969 2003
1970 2141
1971 2319
1972 2458
1973 2844
1974 3056
1975 3225
1976 3568
1977 3899
1978 4224
1979 4492
1980 4331
1981 4558
1982 4859
1983 5373
1984 5804
1985 6162
1986 6849
1987 7612
1988 8441
1989 8948
1990 9764
1991 10620
1992 11150
1993 11700
1994 12610
1995 13670
1996 14570
1997 15200
1998 14360
1999 15690
2000 17000
2001 17780
2002 18870
2003 19490
2004 20440
2005 21340
2006 22340
2007 23370
2008 23740
2009 23700
2010 25080
2011 25800
2012 26200
2013 26820
2014 27740
2015 28720
2016 29730
2017 30770
2018 31840