Year Years
1800 370.4
1801 370.4
1802 369.2
1803 369.2
1804 368
1805 368
1806 366.8
1807 366.8
1808 365.7
1809 365.7
1810 365.7
1811 364.5
1812 364.5
1813 363.3
1814 363.3
1815 362.1
1816 362.1
1817 362.1
1818 361
1819 361
1820 359.8
1821 359.8
1822 358.6
1823 358.6
1824 357.4
1825 357.4
1826 357.4
1827 356.3
1828 356.3
1829 355.1
1830 355.1
1831 354
1832 354
1833 352.8
1834 352.8
1835 352.8
1836 351.7
1837 351.7
1838 350.5
1839 350.5
1840 349.4
1841 349.4
1842 349.4
1843 348.2
1844 348.2
1845 347.1
1846 347.1
1847 345.9
1848 345.9
1849 344.8
1850 344.8
1851 344.8
1852 343.6
1853 343.6
1854 342.5
1855 342.5
1856 341.4
1857 341.4
1858 340.2
1859 340.2
1860 340.2
1861 339.1
1862 339.1
1863 338
1864 338
1865 336.9
1866 336.9
1867 336.9
1868 335.7
1869 335.7
1870 334.6
1871 334.6
1872 333.5
1873 333.5
1874 332.4
1875 332.4
1876 332.4
1877 331.3
1878 331.3
1879 330.1
1880 330.1
1881 329
1882 329
1883 327.9
1884 327.9
1885 327.9
1886 326.8
1887 326.8
1888 325.7
1889 325.7
1890 324.6
1891 324.6
1892 324.6
1893 323.5
1894 323.5
1895 322.4
1896 322.3
1897 321.1
1898 321
1899 319.8
1900 319.5
1901 306.3
1902 294.4
1903 290.9
1904 288.5
1905 285
1906 283.5
1907 283
1908 281.4
1909 279.8
1910 278.1
1911 277.5
1912 275.8
1913 274.2
1914 272.5
1915 271.9
1916 270.2
1917 268.6
1918 267.9
1919 266.3
1920 264.7
1921 263.1
1922 262.4
1923 260.8
1924 258.3
1925 254.8
1926 252.3
1927 244.2
1928 237.1
1929 229.3
1930 222.5
1931 217.6
1932 212.7
1933 207.8
1934 203.1
1935 198.4
1936 193.7
1937 189.1
1947 216.9
1948 200.1
1949 179
1950 148.2
1951 155.8
1952 156.1
1953 121.1
1954 125.6
1955 126.9
1956 109.2
1957 100.1
1958 79.27
1959 83.17
1960 66.8
1961 55.34
1962 53.12
1963 46.4
1964 45.6
1965 45
1966 44.5
1967 43.7
1968 42.6
1969 40.9
1970 38.9
1971 37.3
1972 36.3
1973 35.6
1974 35
1975 34.3
1976 33.5
1977 32.5
1978 31.3
1979 30
1980 28.7
1981 27.6
1982 26.6
1983 25.7
1984 24.6
1985 23.5
1986 22.5
1987 21.8
1988 21.4
1989 21.5
1990 22.1
1991 22.6
1992 22.9
1993 23
1994 23.1
1995 23.2
1996 23.2
1997 23.1
1998 22.7
1999 22
2000 21.1
2001 20.1
2002 19.1
2003 18.1
2004 17
2005 15.9
2006 15
2007 14.3
2008 13.7
2009 13.3
2010 13
2011 12.6
2012 12.1
2013 11.6