Year Years
1800 487.1
1801 487.1
1802 487.1
1803 487.1
1804 487.1
1805 487.1
1806 487.1
1807 487.1
1808 487.1
1809 487.1
1810 487.1
1811 487.1
1812 487.1
1813 487.1
1814 487.1
1815 487.1
1816 487.1
1817 487.1
1818 487.1
1819 487.1
1820 487.1
1821 487.1
1822 487.1
1823 487.1
1824 487.1
1825 487.1
1826 487.1
1827 487.1
1828 487.1
1829 487.1
1830 487.1
1831 487.1
1832 487.1
1833 487.1
1834 487.1
1835 487.1
1836 487.1
1837 487.1
1838 487.1
1839 487.1
1840 487.1
1841 487.1
1842 487.1
1843 487.1
1844 487.1
1845 487.1
1846 487.1
1847 487.1
1848 487.1
1849 487.1
1850 487.1
1851 487.1
1852 487.1
1853 487.1
1854 487.1
1855 487.1
1856 487.1
1857 487.1
1858 487.1
1859 487.1
1860 487.1
1861 487.1
1862 487.1
1863 487.1
1864 487.1
1865 487.1
1866 487.1
1867 487.1
1868 487.1
1869 487.1
1870 487.1
1871 487.1
1872 487.1
1873 487.1
1874 487.1
1875 487.1
1876 487.1
1877 487.1
1878 487.1
1879 487.1
1880 487.1
1881 487.1
1882 487.1
1883 487.1
1884 487.1
1885 487.1
1886 487.1
1887 487.1
1888 487.1
1889 487.1
1890 487.1
1891 504.9
1892 523.1
1893 542
1894 491.5
1895 450.6
1896 460.1
1897 497.1
1898 485.2
1899 514.7
1900 476.1
1901 488.6
1902 463.9
1903 459.2
1904 453.1
1905 484.7
1906 468.2
1907 466
1908 455.4
1909 447.6
1910 471.5
1911 464.8
1912 456.8
1913 450.2
1914 443.7
1915 436.1
1916 429.7
1917 423.5
1918 416.1
1919 410
1920 404
1921 396.9
1922 391
1923 379.3
1924 386.7
1925 394.2
1926 368.3
1927 300.8
1928 363
1929 351.9
1930 342.1
1931 324.9
1932 316.7
1933 327.6
1934 317.2
1935 293.8
1936 314.5
1937 329.6
1938 301.6
1939 242.3
1940 302.1
1941 267.9
1942 294.5
1943 264.7
1944 260.2
1945 250.3
1946 244.2
1947 230.2
1948 212.5
1949 233.4
1959 151.6
1960 146.7
1961 142
1962 137.5
1963 133.4
1964 129.5
1965 125.9
1966 122.5
1967 119.2
1968 115.8
1969 112.1
1970 108.4
1971 104.6
1972 100.8
1973 97.4
1974 94.1
1975 91.1
1976 88.2
1977 85.2
1978 82
1979 78.5
1980 74.9
1981 71.3
1982 67.7
1983 64.3
1984 61.4
1985 58.7
1986 56.2
1987 53.7
1988 51.3
1989 48.9
1990 46.4
1991 44
1992 41.6
1993 39.3
1994 37.1
1995 35
1996 32.9
1997 30.9
1998 29
1999 27.3
2000 25.6
2001 24
2002 22.6
2003 21.4
2004 20.4
2005 19.5
2006 18.9
2007 18.4
2008 17.9
2009 17.4
2010 16.8
2011 16
2012 15.3
2013 14.5