Year Years
1800 418.7
1801 418.7
1802 418.7
1803 418.7
1804 418.7
1805 418.7
1806 418.7
1807 418.7
1808 418.7
1809 418.7
1810 418.7
1811 418.7
1812 418.7
1813 418.7
1814 418.7
1815 418.7
1816 418.7
1817 418.7
1818 418.7
1819 418.7
1820 418.7
1821 418.7
1822 418.7
1823 418.7
1824 418.7
1825 418.7
1826 418.7
1827 418.7
1828 418.7
1829 418.7
1830 418.7
1831 418.7
1832 418.7
1833 418.7
1834 418.7
1835 418.7
1836 418.7
1837 418.7
1838 418.7
1839 418.7
1840 418.7
1841 418.7
1842 418.7
1843 418.7
1844 418.7
1845 418.7
1846 418.7
1847 418.7
1848 418.7
1849 418.7
1850 418.7
1851 418.7
1852 418.7
1853 418.7
1854 418.7
1855 418.7
1856 418.7
1857 418.7
1867 394.8
1868 485.6
1869 446.6
1870 402.9
1871 445
1872 479.1
1873 425.5
1874 425.5
1875 432
1876 451.5
1877 422.2
1878 487.2
1879 409.3
1880 464.5
1881 409.3
1882 488.8
1883 461.2
1884 412.6
1885 438.5
1886 402.9
1887 415.7
1888 406.1
1889 446.6
1890 474.2
1891 441.7
1892 498.6
1893 409.3
1894 430.4
1895 453.1
1896 445
1897 422.2
1898 453.1
1899 390
1900 409.3
1901 441.7
1902 419
1903 406.1
1904 377
1905 441.7
1906 402.9
1907 365.7
1908 396.4
1909 402.9
1910 440.1
1911 385.1
1959 63.52
1960 56.28
1961 49.88
1962 48.2
1963 45.68
1964 41.58
1965 39.15
1966 37.71
1967 37.24
1968 37.52
1969 36.44
1970 44.7
1971 42.8
1972 41.1
1973 39.5
1974 38
1975 36.8
1976 35.8
1977 35
1978 34.3
1979 33.7
1980 33.1
1981 32.5
1982 31.9
1983 31.3
1984 30.7
1985 29.9
1986 29.1
1987 28.1
1988 27.2
1989 26.4
1990 26
1991 25.9
1992 26.1
1993 26.3
1994 26.4
1995 26.3
1996 26
1997 25.6
1998 25
1999 24.2
2000 23.2
2001 22
2002 20.7
2003 19.4
2004 18
2005 16.7
2006 15.5
2007 14.5
2008 13.5
2009 12.6
2010 11.8
2011 11.2
2012 10.6
2013 10.1
