Year Years
1800 450.6
1801 450.6
1802 450.6
1803 450.6
1804 450.6
1805 450.6
1806 450.6
1807 450.6
1808 450.6
1809 450.6
1810 450.6
1811 450.6
1812 450.6
1813 450.6
1814 450.6
1815 450.6
1816 450.6
1817 450.6
1818 450.6
1819 450.6
1820 450.6
1821 450.6
1822 450.6
1823 450.6
1824 450.6
1825 450.6
1826 450.6
1827 450.6
1828 450.6
1829 450.6
1830 450.6
1831 450.6
1832 450.6
1833 450.6
1834 450.6
1835 450.6
1836 450.6
1837 450.6
1838 450.6
1839 450.6
1840 450.6
1841 450.6
1842 450.6
1843 450.6
1844 450.6
1845 450.6
1846 450.6
1847 450.6
1848 450.6
1858 284.4
1859 310.6
1860 282.7
1861 273.2
1862 284.4
1863 309
1864 325.3
1865 326.9
1866 300.8
1867 305.7
1868 344.7
1869 318.8
1870 330.1
1878 318.8
1879 310.6
1880 309
1881 307.3
1882 312.3
1883 331.8
1884 302.4
1885 312.3
1886 284.4
1887 323.6
1888 299.1
1900 331.8
1901 300.8
1902 292.6
1903 263.5
1904 281.1
1905 261.9
1906 282.7
1907 256.7
1908 288.3
1909 286.4
1910 299.2
1911 321.8
1912 261.1
1913 277.1
1914 267.3
1915 269.7
1916 255.2
1917 267.5
1918 345
1919 271.7
1920 314.2
1921 290
1922 257.6
1923 253.2
1924 234.3
1925 227.2
1926 217.8
1927 204.2
1928 214.7
1929 201.9
1930 215.7
1931 207.2
1932 190.3
1933 182.5
1934 177
1935 172.1
1936 169
1937 199.5
1938 183.3
1939 192.5
1940 207.8
1941 205.5
1942 163.5
1943 155.6
1944 136.1
1945 126.8
1946 122.2
1947 107.6
1948 98.77
1949 98.78
1950 115.3
1951 101.8
1952 91
1953 83.1
1954 78.2
1955 74.9
1956 71.9
1957 68.3
1958 64.3
1959 59.9
1960 55.6
1961 51.6
1962 48.2
1963 45.3
1964 42.9
1965 40.8
1966 38.8
1967 36.7
1968 34.4
1969 31.8
1970 29.2
1971 26.6
1972 24.4
1973 23.1
1974 23
1975 23.5
1976 23.6
1977 22.8
1978 21.3
1979 19.5
1980 17.8
1981 16.4
1982 15.4
1983 14.7
1984 14
1985 13.4
1986 12.8
1987 12.3
1988 11.9
1989 11.5
1990 11
1991 10.5
1992 10.1
1993 9.5
1994 8.9
1995 8.3
1996 7.7
1997 7.3
1998 7
1999 6.7
2000 6.5
2001 6.3
2002 6.2
2003 6.1
2004 5.9
2005 5.7
2006 5.5
2007 5.2
2008 5
2009 4.8
2010 4.6
2011 4.4
2012 4.3
2013 4.2