Year Years
1800 329
1801 329
1802 329
1803 329
1804 329
1805 329
1806 329
1807 329
1808 329
1809 329
1810 329
1811 329
1812 329
1813 329
1814 329
1815 329
1816 329
1817 329
1818 329
1819 329
1820 329
1821 329
1822 329
1823 329
1824 329
1825 329
1826 329
1827 329
1828 329
1829 329
1830 329
1831 329
1832 329
1833 329
1834 329
1835 329
1836 329
1837 329
1838 329
1839 329
1840 329
1841 329
1842 329
1843 329
1844 329
1845 329
1846 329
1847 329
1848 329
1849 329
1850 329
1851 329
1852 329
1853 329
1854 329
1855 329
1856 329
1857 329
1858 329
1859 329
1860 329
1861 329
1862 329
1863 329
1864 329
1865 329
1866 329
1867 329
1868 329
1869 329
1870 329
1871 329
1872 329
1873 329
1874 329
1875 329
1876 329
1877 329
1878 329
1879 329
1880 329
1881 322.4
1882 315.9
1883 309.4
1884 304.1
1885 297.7
1886 291.4
1887 285.2
1888 279.1
1889 274
1890 268
1891 264
1892 260
1893 257.1
1894 253.2
1895 249.3
1896 246.4
1897 242.5
1898 238.6
1899 234.7
1900 231.7
1901 227.8
1902 216.6
1903 215.4
1904 224.2
1905 217.5
1906 219
1907 217.7
1908 202.2
1909 193.9
1910 202.2
1911 187.9
1912 181.6
1913 186.2
1914 176.6
1915 172.1
1916 179
1917 180.2
1918 239.3
1919 168.8
1920 167.6
1921 145.5
1922 145.9
1923 150.1
1933 73.14
1934 79.74
1935 75.35
1936 75.98
1937 73.63
1938 69.58
1939 62.93
1940 61.91
1941 60.39
1942 54.77
1943 53.73
1944 50.35
1945 48.26
1946 46.68
1947 42.83
1948 39.76
1949 39.69
1950 37.7
1951 36.7
1952 35.7
1953 34.7
1954 33.8
1955 33
1956 32.3
1957 31.7
1958 31.2
1959 30.6
1960 30.1
1961 29.5
1962 28.9
1963 28.3
1964 27.7
1965 27.1
1966 26.4
1967 25.7
1968 24.9
1969 24.1
1970 23.3
1971 22.4
1972 21.5
1973 20.6
1974 19.7
1975 18.8
1976 17.9
1977 17.1
1978 16.3
1979 15.6
1980 15
1981 14.4
1982 13.9
1983 13.4
1984 13
1985 12.7
1986 12.4
1987 12.1
1988 11.9
1989 11.6
1990 11.2
1991 10.9
1992 10.5
1993 10.1
1994 9.8
1995 9.5
1996 9.2
1997 8.9
1998 8.7
1999 8.6
2000 8.4
2001 8.3
2002 8.2
2003 8.1
2004 8.1
2005 8
2006 7.9
2007 7.8
2008 7.7
2009 7.5
2010 7.4
2011 7.2
2012 7.1
2013 6.9