Year Years 1800 380 1801 380 1802 380 1803 380 1804 380 1805 380 1806 380 1807 380 1808 380 1809 380 1810 380 1811 380 1812 380 1813 380 1814 380 1815 380 1816 380 1817 380 1818 380 1819 380 1820 380 1821 380 1822 380 1823 380 1824 380 1825 380 1826 380 1827 380 1828 380 1829 380 1830 380 1831 380 1832 380 1833 380 1834 380 1835 380 1836 380 1837 380 1838 380 1839 380 1840 380 1841 380 1842 380 1843 380 1844 380 1845 380 1846 380 1847 380 1848 380 1849 380 1850 380 1851 380 1852 380 1853 380 1854 380 1855 380 1856 380 1857 380 1858 380 1859 380 1860 380 1861 380 1862 380 1863 380 1864 380 1865 380 1866 380 1867 380 1868 380 1869 380 1870 380 1871 380 1872 380 1873 380 1874 380 1875 380 1876 380 1877 380 1878 380 1879 380 1880 380 1881 380 1882 380 1883 380 1884 380 1885 380 1886 380 1887 380 1888 380 1889 380 1890 380 1891 380 1892 380 1893 380 1894 380 1895 379.9 1896 379.9 1897 379.8 1898 379.6 1899 379.4 1900 379.2 1901 378.8 1902 378.5 1903 378 1904 377.5 1905 376.9 1906 376.3 1907 375.6 1908 374.9 1909 374.1 1910 373.3 1911 372.4 1912 371.5 1913 370.6 1914 369.7 1915 368.9 1916 368 1917 367.1 1918 366.2 1919 365.3 1920 364.4 1921 363.5 1922 362.6 1923 361.7 1924 360.8 1925 359.9 1926 359 1927 358.1 1928 357.2 1929 356.4 1930 355.5 1931 353.5 1932 352.6 1933 350.6 1934 349.7 1935 347.7 1936 345.7 1937 344.8 1938 352.8 1939 360.9 1940 369.1 1941 377.4 1942 387 1943 369.7 1953 295.8 1954 290 1955 284.2 1956 278.6 1957 272.9 1958 266.7 1959 260.4 1960 253.7 1961 246.7 1962 239.6 1963 232.3 1964 225.3 1965 218.5 1966 211.9 1967 205.6 1968 199.4 1969 193.3 1970 187.4 1971 181.5 1972 175.6 1973 169.6 1974 163.5 1975 157.4 1976 151.3 1977 145.3 1978 139.2 1979 133.2 1980 127.2 1981 121.2 1982 115.2 1983 109.4 1984 103.8 1985 98.3 1986 93.1 1987 88.1 1988 83.3 1989 78.8 1990 74.4 1991 70.4 1992 66.5 1993 62.8 1994 59.4 1995 56.1 1996 52.9 1997 49.9 1998 47 1999 44.3 2000 41.7 2001 39.3 2002 37 2003 34.8 2004 32.8 2005 30.9 2006 29.2 2007 27.4 2008 25.9 2009 24.4 2010 23 2011 21.7 2012 20.4 2013 19.2