Year Years
1800 460.2
1801 460.2
1802 460.2
1803 460.2
1804 460.2
1805 460.2
1806 460.2
1807 460.2
1808 460.2
1809 460.2
1810 460.2
1811 460.2
1812 460.2
1813 460.2
1814 460.2
1815 460.2
1816 460.2
1817 460.2
1818 460.2
1819 460.2
1820 460.2
1821 460.2
1822 460.2
1823 460.2
1824 460.2
1825 460.2
1826 460.2
1827 460.2
1828 460.2
1829 460.2
1830 460.2
1831 460.2
1832 460.2
1833 460.2
1834 460.2
1835 460.2
1836 460.2
1837 460.2
1838 460.2
1839 460.2
1840 460.2
1841 460.2
1842 460.2
1843 460.2
1844 460.2
1845 460.2
1846 460.2
1847 460.2
1848 460.2
1849 460.2
1850 460.2
1851 460.2
1852 460.2
1853 460.2
1854 460.2
1855 460.2
1856 460.2
1857 460.2
1858 460.2
1859 460.2
1860 460.2
1861 460.2
1862 460.2
1863 460.2
1864 460.2
1865 460.2
1866 460.2
1867 460.2
1868 460.2
1869 460.2
1870 460.2
1871 460.2
1872 460.2
1873 460.2
1874 460.2
1875 460.2
1876 460.2
1877 460.2
1878 460.2
1879 460.2
1880 460.2
1881 460.2
1882 460.2
1883 460.2
1884 460.2
1885 460.2
1886 460.2
1887 460.2
1888 460.2
1889 460.2
1890 460.2
1891 460.2
1892 460.2
1893 460.2
1894 460.2
1895 460.2
1896 460.1
1897 460
1898 459.8
1899 459.5
1900 459.2
1901 458.8
1902 458.4
1903 457.8
1904 457.2
1905 456.5
1906 455.8
1907 454.9
1908 454
1909 453.1
1910 452.1
1911 451
1912 449.9
1913 448.9
1914 447.8
1915 446.7
1916 445.6
1917 444.6
1918 443.5
1919 442.4
1920 441.3
1921 440.2
1922 439.1
1923 438.1
1924 433
1925 429.4
1926 425.8
1927 420.8
1928 417.2
1929 412.4
1930 408.9
1931 405.4
1932 400.7
1933 397.2
1934 392.6
1935 388
1936 382.3
1937 377.8
1938 373.3
1939 368.9
1940 364.5
1941 360.2
1942 359.2
1943 358.3
1944 357.4
1954 248.9
1955 248.5
1956 248
1957 247.2
1958 246.8
1959 246.5
1960 246.6
1961 246.8
1962 247.2
1963 248.1
1964 248.8
1965 250
1966 250.8
1967 251
1968 250.1
1969 248
1970 244.7
1971 240
1972 233.8
1973 226.4
1974 217.7
1975 208.1
1976 197.7
1977 186.7
1978 175
1979 162.2
1980 148
1981 132.4
1982 115.5
1983 98.6
1984 83.5
1985 71.3
1986 62.1
1987 55.7
1988 51.4
1989 48.8
1990 47.1
1991 45.9
1992 45.1
1993 44.3
1994 43.5
1995 42.7
1996 41.9
1997 41.2
1998 40.7
1999 40.2
2000 39.6
2001 38.8
2002 37.8
2003 36.5
2004 35.1
2005 33.6
2006 32.1
2007 30.7
2008 29.5
2009 28.4
2010 27.4
2011 26.6
2012 25.8
2013 25.2