Year Years 1800 363.3 1801 363.3 1802 363.3 1803 363.3 1804 363.3 1805 363.3 1806 363.3 1807 363.3 1808 363.3 1809 363.3 1810 363.3 1811 363.3 1812 363.3 1813 363.3 1814 363.3 1815 363.3 1816 363.3 1817 363.3 1818 363.3 1819 363.3 1820 363.3 1821 363.3 1822 363.3 1823 363.3 1824 363.3 1825 363.3 1826 363.3 1827 363.3 1828 363.3 1829 363.3 1830 363.3 1831 363.3 1832 363.3 1833 363.3 1834 363.3 1835 363.3 1836 363.3 1837 363.3 1838 363.3 1839 363.3 1840 363.3 1841 363.3 1842 363.3 1843 363.3 1844 363.3 1845 363.3 1846 363.3 1847 363.3 1848 363.3 1849 363.3 1850 363.3 1851 363.3 1852 363.3 1853 363.3 1854 363.3 1855 363.3 1856 363.3 1857 363.3 1858 363.3 1859 363.3 1860 363.3 1861 363.3 1862 363.3 1863 363.3 1864 363.3 1865 363.3 1866 363.3 1867 363.3 1868 363.3 1869 363.3 1870 363.3 1871 363.3 1872 363.3 1873 363.3 1874 363.3 1875 363.3 1876 363.3 1877 363.3 1878 363.3 1879 363.3 1880 363.3 1881 363.3 1882 363.3 1883 363.3 1884 363.3 1885 363.3 1886 363.3 1887 363.3 1888 363.3 1889 363.3 1890 363.3 1891 363.3 1892 363.3 1893 363.3 1894 363.3 1895 363.3 1896 359.7 1897 356.1 1898 352.5 1899 348.9 1900 345.2 1901 341.5 1902 337.8 1903 334 1904 330.2 1905 326.4 1906 322.6 1907 318.7 1908 314.9 1909 311 1910 307.1 1911 303.2 1912 299.4 1913 295.5 1914 291.7 1915 287.9 1916 284.2 1917 280.5 1918 276.8 1919 273.2 1920 269.6 1921 266 1922 259.5 1923 252.2 1924 246 1925 239.8 1926 232.8 1927 226.8 1928 221 1929 214.3 1930 208.6 1931 203.8 1932 199.9 1933 195.2 1934 190.6 1935 186 1936 182.3 1937 177.8 1938 172.6 1939 167.5 1940 162.5 1950 149.2 1951 145.6 1952 102.7 1953 87.93 1954 71.55 1955 63.58 1956 57.79 1957 65.06 1958 51.7 1959 47.04 1960 41.48 1961 39.2 1962 35.94 1963 37.83 1964 36.54 1965 40.7 1966 38.2 1967 35.2 1968 33.42 1969 36.74 1970 35.43 1971 33.75 1972 35.02 1973 35.46 1974 32.64 1975 32.86 1976 33.54 1977 29.54 1978 30.14 1979 28.6 1980 28.15 1981 25.9 1982 24.8 1983 23.8 1984 22.8 1985 21.8 1986 20.9 1987 20 1988 19.2 1989 18.4 1990 17.7 1991 17 1992 16.3 1993 15.6 1994 15 1995 14.4 1996 13.8 1997 13.3 1998 12.7 1999 12.2 2000 11.8 2001 11.4 2002 11 2003 10.6 2004 10.2 2005 9.8 2006 9.5 2007 9.1 2008 8.8 2009 8.4 2010 8.1 2011 7.8 2012 7.5 2013 7.2