Year Years
1800 441.1
1801 441.1
1802 441.1
1803 441.1
1804 441.1
1805 441.1
1806 441.1
1807 441.1
1808 441.1
1809 441.1
1810 441.1
1811 441.1
1812 441.1
1813 441.1
1814 441.1
1815 441.1
1816 441.1
1817 441.1
1818 441.1
1819 441.1
1820 441.1
1821 441.1
1822 441.1
1823 441.1
1824 441.1
1825 441.1
1826 441.1
1827 441.1
1828 441.1
1829 441.1
1830 441.1
1831 441.1
1832 441.1
1833 441.1
1834 441.1
1835 441.1
1836 441.1
1837 441.1
1838 441.1
1839 441.1
1840 441.1
1841 441.1
1842 441.1
1843 441.1
1844 441.1
1845 441.1
1846 441.1
1847 441.1
1848 441.1
1849 441.1
1850 441.1
1851 441.1
1852 441.1
1853 441.1
1854 441.1
1855 441.1
1856 441.1
1857 441.1
1858 441.1
1859 441.1
1860 441.1
1861 441.1
1862 441.1
1863 441.1
1864 441.1
1865 441.1
1866 441.1
1867 441.1
1868 441.1
1869 441.1
1870 441.1
1871 441.1
1872 441.1
1873 441.1
1874 441.1
1875 441.1
1876 441.1
1877 441.1
1878 441.1
1879 441.1
1880 441.1
1881 441.1
1882 441.1
1883 441.1
1884 441.1
1885 441.1
1886 441.1
1887 441.1
1888 441.1
1889 441.1
1890 435.8
1891 430.5
1892 425.2
1893 420
1894 414.9
1895 408.5
1896 403.3
1897 398.2
1898 393.1
1899 388
1900 382.8
1901 382.5
1902 380.9
1903 380.4
1904 378.7
1905 378.1
1906 377.5
1907 375.6
1908 374.9
1909 372.9
1910 372.1
1911 371.2
1912 370.4
1913 369.5
1914 368.6
1915 367.7
1916 366.8
1917 365.9
1918 365
1919 364.1
1920 363.2
1921 354.3
1922 345.6
1923 336.9
1924 328.5
1925 319.1
1926 310.9
1927 302.8
1928 294.9
1929 287.1
1930 279.5
1931 273.9
1932 269.3
1933 263.9
1934 258.4
1935 253.1
1936 248.7
1937 243.5
1938 238.4
1939 234.2
1940 229.1
1941 220.7
1942 212.4
1943 203.4
1944 195.5
1945 187.7
1946 180
1947 172.5
1948 164.4
1949 157.2
1950 150.2
1951 147.6
1952 142.9
1953 138.8
1954 133.9
1955 128.9
1965 90
1966 85
1967 82.1
1968 80.5
1969 79
1970 76.2
1971 71.7
1972 65.2
1973 58
1974 51.5
1975 45.9
1976 40.4
1977 34.3
1978 29
1979 25.4
1980 23.8
1981 23.2
1982 23
1983 22.8
1984 22.4
1985 21.6
1986 20.6
1987 19.4
1988 18.2
1989 17.4
1990 16.9
1991 16.6
1992 16.2
1993 15.8
1994 15.4
1995 15.3
1996 15.1
1997 14.8
1998 14.3
1999 13.8
2000 13.1
2001 12.3
2002 11.6
2003 10.9
2004 10.6
2005 10.4
2006 10.4
2007 10.4
2008 10.2
2009 10.1
2010 10
2011 10
2012 9.8
2013 9.6