Year Years
1800 413.6
1801 413.6
1802 413.6
1803 413.6
1804 413.6
1805 413.6
1806 413.6
1807 413.6
1808 413.6
1809 413.6
1810 413.6
1811 413.6
1812 413.6
1813 413.6
1814 413.6
1815 413.6
1816 413.6
1817 413.6
1818 413.6
1819 413.6
1820 413.6
1821 413.6
1822 413.6
1823 413.6
1824 413.6
1825 413.6
1826 413.6
1827 413.6
1828 413.6
1829 413.6
1830 413.6
1831 413.6
1832 413.6
1833 413.6
1834 413.6
1835 413.6
1836 413.6
1837 413.6
1838 413.6
1839 413.6
1840 413.6
1841 413.6
1842 413.6
1843 413.6
1844 413.6
1845 413.6
1846 413.6
1847 413.6
1848 413.6
1849 413.6
1850 413.6
1851 413.6
1852 413.6
1853 413.6
1854 413.6
1855 413.6
1856 413.6
1857 413.6
1858 413.6
1859 413.6
1860 413.6
1861 413.6
1862 413.6
1863 413.6
1864 413.6
1865 413.6
1866 413.6
1867 413.6
1868 413.6
1869 413.6
1870 413.6
1871 413.6
1872 413.6
1873 413.6
1874 413.6
1875 413.6
1876 413.6
1877 413.6
1878 413.6
1879 413.6
1880 413.6
1881 413.6
1882 413.6
1883 413.6
1884 413.6
1885 413.6
1886 413.6
1887 413.6
1888 413.6
1889 413.6
1890 413.6
1891 413.6
1892 413.6
1893 413.6
1894 413.6
1895 413.6
1896 413.5
1897 413.4
1898 413.2
1899 413
1900 412.7
1901 412.4
1902 411.9
1903 411.4
1904 410.9
1905 410.3
1906 409.6
1907 408.9
1908 408.1
1909 407.2
1910 406.3
1911 405.4
1912 404.4
1913 403.4
1914 402.4
1915 401.5
1916 400.5
1917 399.5
1918 398.6
1919 397.6
1920 396.6
1921 395.7
1922 394.7
1923 393.7
1924 392.7
1925 391.8
1926 390.8
1927 389.8
1928 388.9
1929 387.9
1930 386.9
1931 385.9
1932 385
1933 384
1934 383
1935 382.1
1936 381.1
1937 380.1
1938 379.2
1939 378.2
1940 377.2
1950 242.3
1951 239.1
1952 235.7
1953 232.4
1954 228.9
1955 225.8
1956 222.5
1957 219.4
1958 216.2
1959 212.8
1960 209.2
1961 205.6
1962 202
1963 198.3
1964 194.4
1965 190.3
1966 186.3
1967 182.1
1968 178.1
1969 174
1970 169.7
1971 164.8
1972 159.4
1973 153.6
1974 147.2
1975 141
1976 134.9
1977 129.2
1978 123.7
1979 118.4
1980 113.2
1981 108.1
1982 102.8
1983 97.6
1984 92.5
1985 87.8
1986 83.6
1987 80
1988 77.1
1989 75.1
1990 73.9
1991 73.9
1992 75.3
1993 78.7
1994 83.8
1995 90.3
1996 97.5
1997 104.6
1998 111.3
1999 117.6
2000 122.5
2001 125.8
2002 128.1
2003 129.5
2004 129.6
2005 128.4
2006 123.5
2007 118.3
2008 115.2
2009 108
2010 94
2011 86.9
2012 81.7
2013 80