Year Total
1800 6.59
1801 6.59
1802 6.59
1803 6.59
1804 6.59
1805 6.59
1806 6.59
1807 6.59
1808 6.59
1809 6.59
1810 6.59
1811 6.59
1812 6.59
1813 6.59
1814 6.59
1815 6.59
1816 6.59
1817 6.59
1818 6.59
1819 6.59
1820 6.59
1821 6.59
1822 6.59
1823 6.59
1824 6.59
1825 6.59
1826 6.59
1827 6.59
1828 6.59
1829 6.59
1830 6.59
1831 6.59
1832 6.59
1833 6.59
1834 6.59
1835 6.59
1836 6.59
1837 6.59
1838 6.59
1839 6.59
1840 6.59
1841 6.59
1842 6.59
1843 6.59
1844 6.59
1845 6.59
1846 6.59
1847 6.59
1848 6.59
1849 6.59
1850 6.59
1851 6.59
1852 6.59
1853 6.59
1854 6.59
1855 6.59
1856 6.59
1857 6.59
1858 6.59
1859 6.59
1860 6.59
1861 6.59
1862 6.59
1863 6.59
1864 6.59
1865 6.59
1866 6.59
1867 6.59
1868 6.59
1869 6.59
1870 6.59
1871 6.59
1872 6.59
1873 6.59
1874 6.59
1875 6.59
1876 6.59
1877 6.59
1878 6.59
1879 6.59
1880 6.59
1881 6.59
1882 6.59
1883 6.59
1884 6.59
1885 6.59
1886 6.59
1887 6.59
1888 6.59
1889 6.59
1890 6.59
1891 6.59
1892 6.59
1893 6.59
1894 6.59
1895 6.59
1896 6.59
1897 6.59
1898 6.59
1899 6.59
1900 6.59
1901 6.59
1902 6.59
1903 6.59
1904 6.59
1905 6.59
1906 6.59
1907 6.59
1908 6.59
1909 6.59
1910 6.59
1911 6.59
1912 6.59
1913 6.59
1914 6.59
1915 6.59
1916 6.59
1917 6.59
1918 6.59
1919 6.59
1920 6.59
1921 6.59
1922 6.59
1923 6.59
1924 6.59
1925 6.59
1926 6.59
1927 6.59
1928 6.59
1929 6.59
1930 6.59
1931 6.59
1932 6.59
1933 6.59
1934 6.59
1935 6.59
1936 6.59
1937 6.59
1938 6.6
1939 6.6
1940 6.6
1941 6.6
1942 6.6
1943 6.6
1944 6.6
1945 6.6
1946 6.6
1947 6.6
1948 6.6
1949 6.6
1950 6.6
1951 6.6
1952 6.6
1953 6.6
1954 6.6
1955 6.6
1956 6.6
1957 6.6
1958 6.6
1959 6.6
1960 6.6
1961 6.6
1962 6.6
1963 6.6
1964 6.6
1965 6.6
1966 6.6
1967 6.6
1968 6.6
1969 6.6
1970 6.6
1971 6.6
1972 6.61
1973 6.61
1974 6.61
1975 6.61
1976 6.61
1977 6.6
1978 6.58
1979 6.56
1980 6.54
1981 6.51
1982 6.48
1983 6.46
1984 6.44
1985 6.41
1986 6.37
1987 6.31
1988 6.23
1989 6.14
1990 6.02
1991 5.9
1992 5.76
1993 5.62
1994 5.48
1995 5.34
1996 5.2
1997 5.05
1998 4.89
1999 4.73
2000 4.58
2001 4.44
2002 4.31
2003 4.21
2004 4.13
2005 4.07
2006 4.02
2007 3.98
2008 3.94
2009 3.9
2010 3.86
2011 3.8
2012 3.74
2013 3.68
2014 3.62
2015 3.55
2016 3.48
2017 3.41
2018 3.35