Year Years 1800 408.5 1801 408.5 1802 408.5 1803 408.5 1804 408.5 1805 408.5 1806 408.5 1807 408.5 1808 408.5 1809 408.5 1810 408.5 1811 408.5 1812 408.5 1813 408.5 1814 408.5 1815 408.5 1816 408.5 1817 408.5 1818 408.5 1819 408.5 1820 408.5 1821 408.5 1822 408.5 1823 408.5 1824 408.5 1825 408.5 1826 408.5 1827 408.5 1828 408.5 1829 408.5 1830 408.5 1831 408.5 1832 408.5 1833 408.5 1834 408.5 1835 408.5 1836 408.5 1837 408.5 1838 408.5 1839 408.5 1840 408.5 1841 408.5 1842 408.5 1843 408.5 1844 408.5 1845 408.5 1846 408.5 1847 408.5 1848 408.5 1849 408.5 1850 408.5 1851 408.5 1852 408.5 1853 408.5 1854 408.5 1855 408.5 1856 408.5 1857 408.5 1858 408.5 1859 408.5 1860 408.5 1861 408.5 1862 408.5 1863 408.5 1864 408.5 1865 408.5 1866 408.5 1867 408.5 1868 408.5 1869 408.5 1870 408.5 1871 408.5 1872 408.5 1873 408.5 1874 408.5 1875 408.5 1876 408.5 1877 408.5 1878 408.5 1879 408.5 1880 408.5 1881 408.5 1882 408.5 1883 408.5 1884 408.5 1885 408.5 1886 408.5 1887 408.5 1888 408.5 1889 408.5 1890 408.5 1891 408.5 1892 408.5 1893 408.5 1894 408.5 1895 408.5 1896 408.4 1897 408.3 1898 408.1 1899 407.9 1900 407.6 1901 407.3 1902 406.9 1903 406.4 1904 405.8 1905 405.2 1906 404.6 1907 403.8 1908 403 1909 402.2 1910 401.3 1911 400.4 1912 399.4 1913 398.4 1914 397.5 1915 396.5 1916 395.6 1917 394.6 1918 393.6 1919 392.7 1920 391.7 1921 390.8 1922 389.8 1923 388.9 1924 387.9 1925 386.9 1926 386 1927 385 1928 384.1 1929 383.1 1930 382.1 1931 381.2 1932 380.2 1933 379.3 1934 378.3 1935 377.4 1936 376.4 1937 375.4 1938 374.5 1939 373.5 1940 372.6 1941 371.6 1942 370.6 1943 369.7 1944 368.7 1945 367.8 1946 346.7 1947 326.4 1948 306.9 1958 186.7 1959 183.8 1960 181 1961 177.8 1962 175 1963 172 1964 169.2 1965 166.3 1966 163.2 1967 160.2 1968 157.5 1969 155.1 1970 153.1 1971 151.4 1972 150 1973 148.4 1974 146.3 1975 143.9 1976 140.8 1977 137.6 1978 133.4 1979 128.6 1980 123.2 1981 117.6 1982 112.1 1983 106.9 1984 102.3 1985 98.4 1986 95.3 1987 93 1988 91.8 1989 91.5 1990 92.2 1991 93.7 1992 96 1993 99 1994 102.7 1995 106.8 1996 111.2 1997 115.4 1998 118.9 1999 121.1 2000 121.4 2001 119.4 2002 115.4 2003 109.7 2004 102.6 2005 94.9 2006 87.1 2007 79.5 2008 72.3 2009 65.7 2010 60.1 2011 55.7 2012 52 2013 49.1