Year Years
1800 506.4
1801 506.4
1802 506.4
1803 506.4
1804 506.4
1805 506.4
1806 506.4
1807 506.4
1808 506.4
1809 506.4
1810 506.4
1811 506.4
1812 506.4
1813 506.4
1814 506.4
1815 506.4
1816 506.4
1817 506.4
1818 506.4
1819 506.4
1820 506.4
1821 506.4
1822 506.4
1823 506.4
1824 506.4
1825 506.4
1826 506.4
1827 506.4
1828 506.4
1829 506.4
1830 506.4
1831 506.4
1832 506.4
1833 506.4
1834 506.4
1835 506.4
1836 506.4
1837 506.4
1838 506.4
1839 506.4
1840 506.4
1841 506.4
1842 506.4
1843 506.4
1844 506.4
1845 506.4
1846 506.4
1847 506.4
1848 506.4
1849 506.4
1850 506.4
1851 506.4
1852 506.4
1853 506.4
1854 506.4
1855 506.4
1856 506.4
1857 506.4
1858 506.4
1859 506.4
1860 506.4
1861 506.4
1862 506.4
1863 506.4
1864 506.4
1865 506.4
1866 506.4
1867 506.4
1868 506.4
1869 506.4
1870 506.4
1871 506.4
1872 506.4
1873 506.4
1874 506.4
1875 506.4
1876 506.4
1877 506.4
1878 506.4
1879 506.4
1880 506.4
1881 506.4
1882 506.4
1883 506.4
1884 506.4
1885 506.4
1886 506.4
1887 506.4
1888 506.4
1889 506.4
1890 506.4
1891 506.4
1892 506.4
1893 506.4
1894 506.4
1895 506.3
1896 506.2
1897 506.1
1898 505.9
1899 505.6
1900 505.3
1901 504.8
1902 504.3
1903 503.7
1904 503.1
1905 502.3
1906 501.5
1907 500.6
1908 499.6
1909 498.5
1910 497.4
1911 496.3
1912 495.1
1913 493.9
1914 492.7
1915 491.5
1916 490.3
1917 489.1
1918 488
1919 486.8
1920 485.6
1921 484.4
1922 483.2
1923 482
1924 480.8
1925 479.6
1926 478.4
1927 477.3
1928 476.1
1929 474.9
1930 473.7
1931 472.5
1932 471.3
1933 470.1
1934 468.9
1935 467.8
1936 466.6
1937 465.4
1938 464.2
1939 463
1940 461.8
1941 441.8
1942 422.6
1943 405.3
1944 387.4
1945 370.1
1946 353.3
1947 337.1
1948 321.4
1958 339
1967 287.9
1968 266.1
1969 245.9
1970 227.3
1971 210.4
1972 195.2
1973 181.6
1974 169.3
1975 157.7
1976 146.6
1977 136.1
1978 125.8
1979 116
1980 106.9
1981 98.6
1982 91.4
1983 85.2
1984 79.8
1985 75.1
1986 70.8
1987 66.9
1988 63.2
1989 59.7
1990 56.6
1991 53.9
1992 51.4
1993 49.1
1994 47
1995 45
1996 43
1997 41
1998 38.9
1999 36.8
2000 34.7
2001 32.8
2002 30.9
2003 29.1
2004 27.4
2005 25.8
2006 24.3
2007 22.8
2008 21.5
2009 20.2
2010 19.2
2011 18.3
2012 17.5
2013 16.8