Year Years 1800 490.1 1801 490.1 1802 490.1 1803 490.1 1804 490.1 1805 490.1 1806 490.1 1807 490.1 1808 490.1 1809 490.1 1810 490.1 1811 490.1 1812 490.1 1813 490.1 1814 490.1 1815 490.1 1816 490.1 1817 490.1 1818 490.1 1819 490.1 1820 490.1 1821 490.1 1822 490.1 1823 490.1 1824 490.1 1825 490.1 1826 490.1 1827 490.1 1828 490.1 1829 490.1 1830 490.1 1831 490.1 1832 490.1 1833 490.1 1834 490.1 1835 490.1 1836 490.1 1837 490.1 1838 490.1 1839 490.1 1840 490.1 1841 490.1 1842 490.1 1843 490.1 1844 490.1 1845 490.1 1846 490.1 1847 490.1 1848 490.1 1849 490.1 1850 490.1 1851 490.1 1852 490.1 1853 490.1 1854 490.1 1855 490.1 1856 490.1 1857 490.1 1858 490.1 1859 490.1 1860 490.1 1861 490.1 1862 490.1 1863 490.1 1864 490.1 1865 490.1 1866 490.1 1867 490.1 1868 490.1 1869 490.1 1870 490.1 1871 490.1 1872 490.1 1873 490.1 1874 490.1 1875 490.1 1876 490.1 1877 490.1 1878 490.1 1879 490.1 1880 490.1 1881 490.1 1882 490.1 1883 490.1 1884 490.1 1885 490.1 1886 490.1 1887 490.1 1888 490.1 1889 490.1 1890 490.1 1891 490.1 1892 490.1 1893 490.1 1894 490.1 1895 490 1896 489.9 1897 489.8 1898 489.6 1899 489.4 1900 489 1954 374.5 1955 371 1956 367.3 1957 364.8 1958 362 1959 359.5 1960 357 1961 354.4 1962 352.1 1963 348.9 1964 345.9 1965 343.3 1966 340.1 1967 337.3 1968 334.3 1969 331 1970 327.8 1971 324.2 1972 320.8 1973 317.6 1974 313.8 1975 310.3 1976 307.5 1977 303.9 1978 300.5 1979 296.9 1980 293.8 1981 290.8 1982 287.1 1983 283.5 1984 279.8 1985 275.6 1986 271.5 1987 266.8 1988 262.3 1989 257.7 1990 252.9 1991 247.9 1992 242.6 1993 236.8 1994 230.4 1995 223.7 1996 216.5 1997 208.8 1998 200.4 1999 191.7 2000 182.5 2001 173.2 2002 164 2003 155.6 2004 147.4 2005 139.7 2006 132.7 2007 126.3 2008 120.6 2009 115.5 2010 110.8 2011 106.7 2012 102.9 2013 99.2