Year Years 1800 429.2 1801 429.2 1802 429.2 1803 429.2 1804 429.2 1805 429.2 1806 429.2 1807 429.2 1808 429.2 1809 429.2 1810 429.2 1811 429.2 1812 429.2 1813 429.2 1814 429.2 1815 429.2 1816 429.2 1817 429.2 1818 429.2 1819 429.2 1820 429.2 1821 429.2 1822 429.2 1823 429.2 1824 429.2 1825 429.2 1826 429.2 1827 429.2 1828 429.2 1829 429.2 1830 429.2 1831 429.2 1832 429.2 1833 429.2 1834 429.2 1835 429.2 1836 429.2 1837 429.2 1838 429.2 1839 429.2 1840 429.2 1841 429.2 1842 429.2 1843 429.2 1844 429.2 1845 429.2 1846 429.2 1847 429.2 1848 429.2 1849 429.2 1850 429.2 1851 429.2 1852 429.2 1853 429.2 1854 429.2 1855 429.2 1856 429.2 1857 429.2 1858 429.2 1859 429.2 1860 429.2 1861 429.2 1862 429.2 1863 429.2 1864 429.2 1865 429.2 1866 429.2 1867 429.2 1868 429.2 1869 429.2 1870 429.2 1871 429.2 1872 429.2 1873 429.2 1874 429.2 1875 429.2 1876 429.2 1877 429.2 1878 429.2 1879 429.2 1880 429.2 1881 429.2 1882 429.2 1883 429.2 1884 429.2 1885 429.2 1886 429.2 1887 429.2 1888 429.2 1889 429.2 1890 429.2 1891 429.2 1892 429.2 1893 429.2 1894 429.1 1895 429.1 1896 429.1 1897 428.9 1898 428.8 1899 428.5 1900 428.2 1901 427.9 1902 427.4 1903 426.9 1904 426.4 1905 425.7 1906 425 1907 424.2 1908 423.4 1909 422.5 1910 421.6 1911 420.6 1912 419.6 1913 418.6 1914 417.6 1915 416.6 1916 415.6 1917 414.6 1918 413.6 1919 412.5 1920 411.5 1921 410.5 1922 409.5 1923 408.5 1924 407.5 1925 406.5 1926 405.5 1927 404.5 1928 403.5 1929 402.5 1930 401.5 1931 400.5 1932 399.4 1933 398.4 1934 397.4 1935 396.4 1936 395.4 1937 394.4 1938 393.4 1939 392.4 1940 391.4 1941 390.4 1942 389.4 1943 388.4 1944 387.4 1945 386.4 1946 381.8 1954 343 1955 341.2 1956 339.9 1957 337.9 1958 336 1959 333.6 1960 330.6 1961 326.7 1962 321.8 1963 317.1 1964 312.2 1965 307.1 1966 302.2 1967 297.2 1968 291.9 1969 286.7 1970 281.6 1971 276.5 1972 271.7 1973 267.2 1974 262.7 1975 258.2 1976 254.1 1977 250.3 1978 246.7 1979 243.4 1980 240.2 1981 237.5 1982 235.3 1983 234 1984 233.7 1985 234.4 1986 236.5 1987 239.5 1988 242.8 1989 245.9 1990 248 1991 248.6 1992 246.9 1993 242.9 1994 236.9 1995 229.4 1996 220.2 1997 210 1998 198.8 1999 187.2 2000 175.2 2001 163 2002 151 2003 139.2 2004 128.1 2005 117.7 2006 108.1 2007 99.6 2008 92.6 2009 86.7 2010 81.9 2011 77.8 2012 74.3 2013 71.1