Year Years
1800 494.5
1801 494.5
1802 494.5
1803 494.5
1804 494.5
1805 494.5
1806 494.5
1807 494.5
1808 494.5
1809 494.5
1810 494.5
1811 494.5
1812 494.5
1813 494.5
1814 494.5
1815 494.5
1816 494.5
1817 494.5
1818 494.5
1819 494.5
1820 494.5
1821 494.5
1822 494.5
1823 494.5
1824 494.5
1825 494.5
1826 494.5
1827 494.5
1828 494.5
1829 494.5
1830 494.5
1831 494.5
1832 494.5
1833 494.5
1834 494.5
1835 494.5
1836 494.5
1837 494.5
1838 494.5
1839 494.5
1840 494.5
1841 494.5
1842 494.5
1843 494.5
1844 494.5
1845 494.5
1846 494.5
1847 494.5
1848 494.5
1849 494.5
1850 494.5
1851 494.5
1852 494.5
1853 494.5
1854 494.5
1855 494.5
1856 494.5
1857 494.5
1858 494.5
1859 494.5
1860 494.5
1861 494.5
1862 494.5
1863 494.5
1864 494.5
1865 494.5
1866 494.5
1867 494.5
1868 494.5
1869 494.5
1870 494.5
1871 494.5
1872 494.5
1873 494.5
1874 494.5
1875 494.5
1876 494.5
1877 494.5
1878 494.5
1879 494.5
1880 494.5
1881 494.5
1882 494.5
1883 494.5
1884 494.5
1885 494.5
1886 494.5
1887 494.5
1888 494.5
1889 494.5
1890 494.5
1891 494.5
1892 494.5
1893 494.5
1894 494.5
1895 494.4
1896 494.4
1897 494.2
1898 494
1899 493.8
1900 493.4
1901 493
1902 492.5
1903 491.9
1904 491.2
1905 490.5
1906 489.7
1907 488.8
1908 487.8
1909 486.8
1910 485.7
1911 484.6
1912 483.5
1913 482.3
1914 481.1
1915 480
1916 478.8
1917 477.7
1918 476.5
1919 475.3
1920 474.2
1930 430
1960 497.9
1961 484.5
1962 471.5
1963 458.5
1964 446.1
1965 435.1
1966 425.1
1967 416.5
1968 409.3
1969 403.1
1970 398
1971 393.1
1972 387.6
1973 381.2
1974 374.1
1975 366
1976 357.3
1977 348.3
1978 339.4
1979 331.2
1980 323.3
1981 315.5
1982 307.5
1983 299.6
1984 291.8
1985 284.5
1986 277.5
1987 271
1988 265
1989 259.3
1990 254.2
1991 249.8
1992 246.4
1993 243.8
1994 241.8
1995 240.1
1996 238.1
1997 235.5
1998 231.9
1999 226.8
2000 219.9
2001 211.6
2002 202.4
2003 192.4
2004 182.2
2005 172.3
2006 163.4
2007 155.5
2008 148.6
2009 142.6
2010 137.1
2011 132
2012 127.5
2013 122.7