Year Years 1800 409.8 1801 409.8 1802 409.8 1803 409.8 1804 409.8 1805 409.8 1806 409.8 1807 409.8 1808 409.8 1809 409.8 1810 409.8 1811 409.8 1812 409.8 1813 409.8 1814 409.8 1815 409.8 1816 409.8 1817 409.8 1818 409.8 1819 409.8 1820 409.8 1821 409.8 1822 409.8 1823 409.8 1824 409.8 1825 409.8 1826 409.8 1827 409.8 1828 409.8 1829 409.8 1830 409.8 1831 409.8 1832 409.8 1833 409.8 1834 409.8 1835 409.8 1836 409.8 1837 409.8 1838 409.8 1839 409.8 1840 409.8 1841 409.8 1842 409.8 1843 409.8 1844 409.8 1845 409.8 1846 409.8 1847 409.8 1848 409.8 1849 409.8 1850 409.8 1851 409.8 1852 409.8 1853 409.8 1854 409.8 1855 409.8 1856 409.8 1857 409.8 1858 409.8 1859 409.8 1860 409.8 1861 409.8 1862 409.8 1863 409.8 1864 409.8 1865 409.8 1866 409.8 1867 409.8 1868 409.8 1869 409.8 1870 409.8 1871 409.8 1872 409.8 1873 409.8 1874 409.8 1875 409.8 1876 409.8 1877 409.8 1878 409.8 1879 409.8 1880 409.8 1881 409.8 1882 409.8 1883 409.8 1884 409.8 1885 409.8 1886 409.8 1887 409.8 1888 409.8 1889 409.8 1890 409.8 1891 409.8 1892 409.8 1893 409.8 1894 409.8 1895 409.8 1896 409.7 1897 409.6 1898 409.4 1899 409.2 1900 408.9 1901 408.6 1902 408.1 1903 407.6 1904 407.1 1905 406.5 1906 405.8 1907 405.1 1908 404.3 1909 403.4 1910 402.5 1911 401.6 1912 400.6 1913 399.7 1914 398.7 1915 397.8 1916 396.8 1917 395.8 1918 394.9 1919 393.9 1920 393 1921 392 1922 391 1923 390.1 1924 389.1 1925 388.1 1926 387.2 1927 386.2 1928 385.3 1929 384.3 1930 383.3 1931 382.4 1932 381.4 1933 380.5 1934 379.5 1935 378.5 1936 377.6 1937 376.6 1938 375.6 1939 374.7 1940 373.7 1941 372.8 1942 371.8 1943 370.8 1944 369.9 1952 240.1 1953 235.7 1954 231.3 1955 227.5 1956 223.2 1957 219.2 1958 215 1959 211 1960 207.2 1961 203.5 1962 200 1963 196.6 1964 193.7 1965 191.5 1966 189.6 1967 188.1 1968 186.6 1969 184.3 1970 181.1 1971 176.8 1972 171.9 1973 167.1 1974 162.8 1975 159.5 1976 157.5 1977 156.9 1978 157.3 1979 157.9 1980 159.2 1981 160.5 1982 162.7 1983 165.9 1984 170 1985 174.6 1986 179.5 1987 184 1988 187.7 1989 190.6 1990 192.5 1991 193.4 1992 193.5 1993 192.7 1994 190.9 1995 188.1 1996 185.1 1997 182.2 1998 179 1999 174.6 2000 168.8 2001 161.3 2002 152.3 2003 143.3 2004 134.8 2005 126.8 2006 120.2 2007 114.6 2008 109.7 2009 105.1 2010 101.4 2011 95.9 2012 89.8 2013 87.4