Year Years
1800 391
1801 391
1802 391
1803 391
1804 391
1805 391
1806 391
1807 391
1808 391
1809 391
1810 391
1811 391
1812 391
1813 391
1814 391
1815 391
1816 391
1817 391
1818 391
1819 391
1820 391
1821 391
1822 391
1823 391
1824 391
1825 391
1826 391
1827 391
1828 391
1829 391
1830 391
1831 391
1832 391
1833 391
1834 391
1835 391
1836 391
1837 391
1838 391
1839 391
1840 391
1841 391
1842 391
1843 391
1844 391
1845 391
1846 391
1847 391
1848 391
1849 391
1850 391
1851 391
1852 391
1862 115.4
1863 173.4
1864 186.6
1865 167.8
1866 149.3
1867 145.6
1868 142
1869 145.6
1870 136.6
1871 118.9
1872 149.3
1873 164.1
1874 165.9
1875 197.8
1876 154.8
1877 133
1878 120.6
1879 162.2
1880 136.6
1881 134.8
1882 127.7
1883 156.7
1884 112
1885 129.4
1886 145.6
1887 138.4
1888 98.52
1889 112
1890 112
1891 133
1892 129.4
1893 127.7
1894 115.4
1895 127.7
1896 108.6
1897 100.2
1898 113.7
1899 142
1900 105.2
1901 98.52
1902 118.9
1903 115.4
1904 98.52
1905 93.6
1906 84.24
1907 129.4
1908 93.6
1909 84.24
1910 93.6
1911 75.01
1912 67.3
1913 79.68
1914 67.3
1915 67.3
1916 67.3
1917 62.78
1918 62.78
1919 58.34
1920 67.3
1921 62.78
1922 53.96
1923 56.87
1924 51.09
1925 56.87
1926 56.87
1927 58.34
1928 51.09
1929 46.87
1930 48.26
1931 46.87
1932 48.26
1933 48.26
1934 49.67
1935 52.53
1936 52.53
1937 49.67
1938 65.79
1939 53.96
1940 46.87
1941 51.09
1942 46.87
1943 49.67
1944 49.67
1945 44.11
1946 40.06
1947 37.32
1948 36.04
1949 38.96
1950 35.5
1951 34.8
1952 33.9
1953 33
1954 32.1
1955 31.3
1956 30.6
1957 30.1
1958 29.5
1959 28.8
1960 27.9
1961 26.9
1962 25.8
1963 24.7
1964 23.8
1965 23
1966 22.5
1967 22
1968 21.6
1969 21.2
1970 20.8
1971 20.3
1972 19.9
1973 19.4
1974 18.9
1975 18.3
1976 17.7
1977 17.1
1978 16.6
1979 16
1980 15.6
1981 15.2
1982 14.8
1983 14.5
1984 14.2
1985 13.8
1986 13.4
1987 12.9
1988 12.4
1989 11.8
1990 11.2
1991 10.5
1992 10
1993 9.5
1994 9.1
1995 8.7
1996 8.4
1997 8.1
1998 7.8
1999 7.6
2000 7.4
2001 7.2
2002 7
2003 6.8
2004 6.7
2005 6.6
2006 6.5
2007 6.4
2008 6.4
2009 6.4
2010 6.4
2011 6.4
2012 6.4
2013 6.3