Year Years 1800 404.7 1801 404.7 1802 404.7 1803 404.7 1804 404.7 1805 404.7 1806 404.7 1807 404.7 1808 404.7 1809 404.7 1810 404.7 1811 404.7 1812 404.7 1813 404.7 1814 404.7 1815 404.7 1816 404.7 1817 404.7 1818 404.7 1819 404.7 1820 404.7 1821 404.7 1822 404.7 1823 404.7 1824 404.7 1825 404.7 1826 404.7 1827 404.7 1828 404.7 1829 404.7 1830 404.7 1831 404.7 1832 404.7 1833 404.7 1834 404.7 1835 404.7 1836 404.7 1837 404.7 1838 404.7 1839 404.7 1840 404.7 1841 404.7 1842 404.7 1843 404.7 1844 404.7 1845 404.7 1846 404.7 1847 404.7 1848 404.7 1849 404.7 1850 404.7 1851 404.7 1852 404.7 1853 404.7 1854 404.7 1855 404.7 1856 404.7 1857 404.7 1858 404.7 1859 404.7 1860 404.7 1861 400.9 1862 395.9 1863 392.2 1864 388.5 1865 383.7 1866 380 1867 376.4 1868 371.6 1869 368 1870 364.5 1871 359.8 1872 356.3 1873 352.8 1874 349.4 1875 344.8 1876 341.4 1877 338 1878 333.5 1879 330.1 1880 326.8 1881 322.4 1882 319.1 1883 315.9 1884 311.5 1885 308.3 1886 305.1 1887 300.8 1888 297.7 1889 294.6 1890 290.4 1891 287.3 1892 284.2 1893 280.1 1894 277 1895 274 1896 269.9 1897 266.8 1898 263.8 1899 260.6 1900 257.5 1901 254.4 1902 251.2 1903 248 1904 243.9 1905 240.7 1906 237.4 1907 234.2 1908 230.9 1909 227.7 1910 224.4 1911 221.2 1912 217.1 1913 213.9 1914 210.7 1915 207.6 1916 204.5 1917 201.4 1918 198.3 1919 195.3 1920 191.4 1921 188.4 1922 185.4 1923 182.5 1924 179.6 1925 175.9 1926 172.3 1927 168.7 1928 165.1 1929 161.6 1930 158.1 1931 154.7 1932 151.2 1933 147.9 1934 144.6 1935 141.3 1936 140.2 1937 139.1 1938 138 1939 137 1940 135.9 1941 134.8 1942 133.8 1943 132 1944 131 1945 129.9 1946 128.9 1947 127.9 1948 126.9 1949 125.9 1959 45.22 1960 39.03 1961 34.65 1962 36.5 1963 36.97 1964 32.12 1965 28.18 1966 26.62 1967 27.4 1968 28.63 1969 26.95 1970 27.14 1971 23.8 1972 23.4 1973 23.3 1974 27.15 1975 29.35 1976 29.1 1977 26.02 1978 26.89 1979 25 1980 24.9 1981 24.7 1982 24.3 1983 23.6 1984 22.4 1985 21 1986 19.6 1987 18.6 1988 18.2 1989 19 1990 20.4 1991 22 1992 23.2 1993 23.8 1994 24 1995 23.7 1996 22.9 1997 21.6 1998 20.1 1999 18.6 2000 17.2 2001 16 2002 15.1 2003 14.3 2004 13.4 2005 12.6 2006 11.8 2007 11.1 2008 10.5 2009 9.9 2010 9.4 2011 9 2012 8.7 2013 8.4