Year Years 1800 398.4 1801 398.4 1802 398.4 1803 398.4 1804 398.4 1805 398.4 1806 398.4 1807 398.4 1808 398.4 1809 398.4 1810 398.4 1811 398.4 1812 398.4 1813 398.4 1814 398.4 1815 398.4 1816 398.4 1817 398.4 1818 398.4 1819 398.4 1820 398.4 1821 398.4 1822 398.4 1823 398.4 1824 398.4 1825 398.4 1826 398.4 1827 398.4 1828 398.4 1829 398.4 1830 398.4 1831 398.4 1832 398.4 1833 398.4 1834 398.4 1835 398.4 1836 398.4 1837 398.4 1838 398.4 1839 398.4 1840 398.4 1841 398.4 1842 398.4 1843 398.4 1844 398.4 1845 398.4 1846 398.4 1847 398.4 1848 398.4 1849 398.4 1850 398.4 1851 398.4 1852 398.4 1853 398.4 1854 398.4 1855 398.4 1856 398.4 1857 398.4 1858 398.4 1859 398.4 1860 398.4 1861 398.4 1862 398.4 1863 398.4 1864 398.4 1865 398.4 1866 398.4 1867 398.4 1868 398.4 1869 398.4 1870 398.4 1871 398.4 1872 398.4 1873 398.4 1874 398.4 1875 398.4 1876 398.4 1877 398.4 1878 398.4 1879 398.4 1880 398.4 1881 398.4 1882 398.4 1883 398.4 1884 398.4 1885 398.4 1886 398.4 1887 398.4 1888 398.4 1889 398.4 1890 398.4 1891 398.4 1892 398.4 1893 398.4 1894 398.4 1895 398.4 1896 398.4 1897 398.2 1898 398.1 1899 397.9 1900 397.6 1901 397.2 1902 396.8 1903 396.4 1904 395.8 1905 395.2 1906 394.6 1907 393.9 1908 393.1 1909 392.3 1910 391.4 1911 390.5 1912 389.6 1913 388.6 1914 387.7 1915 386.8 1916 385.8 1917 384.9 1918 384 1919 383 1920 382.1 1921 381.1 1922 380.2 1923 379.3 1924 378.4 1925 377.4 1926 376.5 1927 375.5 1928 374.6 1929 373.7 1930 372.7 1931 366 1932 359.4 1933 352.8 1934 346.4 1935 339.9 1936 333.7 1937 327.4 1938 321.3 1939 315.2 1940 309.3 1941 303.4 1942 297.5 1943 291.8 1944 286.1 1945 280.4 1946 274.9 1947 269.4 1948 264 1949 258.7 1950 253.4 1951 249.1 1952 241.3 1953 234.2 1954 226.8 1955 220.2 1956 214.3 1957 208.2 1958 201.9 1959 196.6 1960 191.2 1961 186.1 1962 180.9 1963 175.8 1964 170.8 1974 126.5 1975 120.1 1976 114 1977 108.1 1978 102.7 1979 97.6 1980 92.7 1981 88.2 1982 84 1983 80.1 1984 76.5 1985 73.2 1986 70.2 1987 67.5 1988 65.1 1989 62.9 1990 61 1991 59.6 1992 58.5 1993 58.2 1994 58.6 1995 59.9 1996 62 1997 64.7 1998 67.8 1999 71 2000 74.3 2001 77.1 2002 79.5 2003 80.8 2004 80.7 2005 79.6 2006 76.9 2007 72.9 2008 69.3 2009 63.4 2010 53.2 2011 47.5 2012 44.9 2013 43.9