Year Years 1800 414.9 1801 413.6 1802 411.1 1803 409.8 1804 408.5 1805 406 1806 404.7 1807 402.2 1808 400.9 1809 398.4 1810 397.2 1811 394.7 1812 393.5 1813 391 1814 389.8 1815 388.5 1816 387.3 1817 386.1 1818 384.9 1819 383.7 1820 380 1821 375.2 1822 371.6 1823 366.8 1824 363.3 1825 365.7 1826 366.8 1827 369.2 1828 370.4 1829 372.8 1830 371.6 1831 369.2 1832 368 1833 365.7 1834 364.5 1835 363.3 1836 363.3 1837 362.1 1838 362.1 1839 361 1840 362.1 1841 363.3 1842 365.7 1843 366.8 1844 368 1845 368 1846 366.8 1847 366.8 1848 365.7 1849 365.7 1850 364.5 1851 364.5 1852 363.3 1853 363.3 1854 362.1 1855 362.1 1856 362.1 1857 361 1858 361 1859 361 1860 365.7 1861 369.2 1862 374 1863 377.6 1864 382.4 1865 394.7 1866 408.5 1867 421.3 1868 435.8 1869 449.2 1870 447.9 1871 447.9 1872 446.5 1873 446.5 1874 445.1 1875 429.2 1876 413.6 1877 399.7 1878 384.9 1879 370.4 1880 358.6 1881 345.9 1882 334.6 1883 322.4 1884 311.5 1885 306.2 1886 299.8 1887 294.6 1888 288.3 1889 283.2 1890 327.9 1891 375.2 1892 427.9 1893 484.2 1894 548.4 1895 561.5 1896 574.9 1897 588.5 1898 603.7 1899 621 1900 402.6 1901 399.7 1902 396.8 1903 393.9 1904 390.9 1905 386.6 1906 383.6 1907 380.5 1908 377.3 1909 374.1 1910 370.9 1911 367.7 1912 364.5 1913 360.1 1914 356.9 1915 353.8 1916 350.7 1917 347.6 1918 344.4 1919 340.3 1920 337.2 1921 333.1 1922 330.1 1932 173.4 1933 209.1 1934 149.3 1935 199.7 1936 160.4 1937 125.9 1938 118.9 1943 98.52 1944 78.12 1945 95.24 1946 52.53 1947 53.96 1948 49.67 1949 48.26 1950 44.11 1951 49.67 1952 48.26 1953 48.26 1954 41.39 1955 45.49 1956 42.74 1957 46.87 1962 50.5 1963 47.3 1964 46 1965 44.8 1966 44.4 1967 44.8 1968 45.2 1969 44.9 1970 43.3 1971 40 1972 35.8 1973 32.2 1974 30.3 1975 29.3 1976 27.5 1977 24.8 1978 22.2 1979 20.7 1980 20.1 1981 19.9 1982 19.8 1983 19.6 1984 19.1 1985 18.4 1986 17.4 1987 16.4 1988 15.2 1989 14.2 1990 13.3 1991 12.4 1992 11.7 1993 11.2 1994 10.9 1995 10.8 1996 10.5 1997 10 1998 9.4 1999 8.8 2000 8.4 2001 8 2002 7.7 2003 7.4 2004 7.1 2005 6.8 2006 6.5 2007 6.3 2008 6.3 2009 6.5 2010 6.8 2011 6.9 2012 6.6 2013 6.2