Year Total
1800 5.96
1801 5.96
1802 5.96
1803 5.96
1804 5.96
1805 5.96
1806 5.96
1807 5.96
1808 5.96
1809 5.96
1810 5.96
1811 5.96
1812 5.96
1813 5.96
1814 5.96
1815 5.96
1816 5.96
1817 5.96
1818 5.96
1819 5.96
1820 5.96
1821 5.96
1822 5.96
1823 5.96
1824 5.96
1825 5.96
1826 5.96
1827 5.96
1828 5.96
1829 5.96
1830 5.96
1831 5.96
1832 5.96
1833 5.96
1834 5.96
1835 5.96
1836 5.96
1837 5.96
1838 5.96
1839 5.96
1840 5.96
1841 5.96
1842 5.96
1843 5.96
1844 5.96
1845 5.96
1846 5.96
1847 5.96
1848 5.96
1849 5.96
1850 5.96
1851 5.96
1852 5.96
1853 5.96
1854 5.96
1855 5.96
1856 5.96
1857 5.96
1858 5.96
1859 5.96
1860 5.96
1861 5.96
1862 5.96
1863 5.96
1864 5.96
1865 5.96
1866 5.96
1867 5.96
1868 5.96
1869 5.96
1870 5.96
1871 5.96
1872 5.96
1873 5.96
1874 5.96
1875 5.96
1876 5.96
1877 5.96
1878 5.96
1879 5.96
1880 5.96
1881 5.96
1882 5.96
1883 5.96
1884 5.96
1885 5.96
1886 5.96
1887 5.96
1888 5.96
1889 5.96
1890 5.96
1891 5.96
1892 5.96
1893 5.96
1894 5.96
1895 5.96
1896 5.96
1897 5.96
1898 5.96
1899 5.96
1900 5.96
1901 5.96
1902 5.96
1903 5.96
1904 5.96
1905 5.96
1906 5.96
1907 5.96
1908 5.96
1909 5.96
1910 5.96
1911 5.96
1912 5.96
1913 5.96
1914 5.96
1915 5.96
1916 5.96
1917 5.96
1918 5.96
1919 5.96
1920 5.96
1921 5.96
1922 5.96
1923 5.96
1924 5.96
1925 5.96
1926 5.96
1927 5.96
1928 5.96
1929 5.96
1930 5.96
1931 5.96
1932 5.96
1933 5.96
1934 5.96
1935 5.96
1936 5.96
1937 5.96
1938 5.96
1939 5.96
1940 5.96
1941 5.96
1942 5.96
1943 5.96
1944 5.96
1945 5.96
1946 5.96
1947 5.96
1948 5.96
1949 5.96
1950 5.96
1951 5.97
1952 5.99
1953 6.01
1954 6.03
1955 6.05
1956 6.07
1957 6.09
1958 6.11
1959 6.13
1960 6.15
1961 6.17
1962 6.18
1963 6.2
1964 6.22
1965 6.24
1966 6.26
1967 6.3
1968 6.35
1969 6.4
1970 6.46
1971 6.52
1972 6.57
1973 6.61
1974 6.64
1975 6.65
1976 6.65
1977 6.62
1978 6.58
1979 6.52
1980 6.45
1981 6.36
1982 6.26
1983 6.15
1984 6.02
1985 5.89
1986 5.76
1987 5.63
1988 5.49
1989 5.36
1990 5.23
1991 5.1
1992 4.97
1993 4.84
1994 4.72
1995 4.59
1996 4.47
1997 4.35
1998 4.23
1999 4.12
2000 4.02
2001 3.93
2002 3.84
2003 3.77
2004 3.71
2005 3.67
2006 3.64
2007 3.62
2008 3.61
2009 3.61
2010 3.61
2011 3.6
2012 3.59
2013 3.56
2014 3.52
2015 3.47
2016 3.42
2017 3.35
2018 3.3