Year Total
1800 6.02
1801 6.02
1802 6.02
1803 6.02
1804 6.02
1805 6.02
1806 6.02
1807 6.02
1808 6.02
1809 6.02
1810 6.02
1811 6.02
1812 6.02
1813 6.02
1814 6.02
1815 6.02
1816 6.02
1817 6.02
1818 6.02
1819 6.02
1820 6.02
1821 6.02
1822 6.02
1823 6.02
1824 6.02
1825 6.02
1826 6.02
1827 6.02
1828 6.02
1829 6.02
1830 6.02
1831 6.02
1832 6.02
1833 6.02
1834 6.02
1835 6.02
1836 6.02
1837 6.02
1838 6.02
1839 6.02
1840 6.02
1841 6.02
1842 6.02
1843 6.02
1844 6.02
1845 6.02
1846 6.02
1847 6.02
1848 6.02
1849 6.02
1850 6.02
1851 6.02
1852 6.02
1853 6.02
1854 6.02
1855 6.02
1856 6.02
1857 6.02
1858 6.02
1859 6.02
1860 6.02
1861 6.02
1862 6.02
1863 6.02
1864 6.02
1865 6.02
1866 6.02
1867 6.02
1868 6.02
1869 6.02
1870 6.02
1871 6.02
1872 6.02
1873 6.02
1874 6.02
1875 6.02
1876 6.02
1877 6.02
1878 6.02
1879 6.02
1880 6.02
1881 6.02
1882 6.02
1883 6.02
1884 6.02
1885 6.02
1886 6.02
1887 6.02
1888 6.02
1889 6.02
1890 6.02
1891 6.02
1892 6.02
1893 6.02
1894 6.02
1895 6.02
1896 6.02
1897 6.02
1898 6.02
1899 6.02
1900 6.02
1901 6.02
1902 6.02
1903 6.02
1904 6.02
1905 6.02
1906 6.02
1907 6.02
1908 6.02
1909 6.02
1910 6.02
1911 6.02
1912 6.02
1913 6.02
1914 6.02
1915 6.02
1916 6.02
1917 6.02
1918 6.02
1919 6.02
1920 6.02
1921 6.02
1922 6.02
1923 6.02
1924 6.02
1925 6.02
1926 6.07
1927 6.12
1928 6.17
1929 6.23
1930 6.28
1931 6.33
1932 6.38
1933 6.43
1934 6.48
1935 6.53
1936 6.58
1937 6.64
1938 6.69
1939 6.74
1940 6.79
1941 6.84
1942 6.89
1943 6.94
1944 7
1945 7.05
1946 7.1
1947 7.15
1948 7.2
1949 7.25
1950 7.3
1951 7.28
1952 7.22
1953 7.17
1954 7.13
1955 7.09
1956 7.05
1957 7.01
1958 6.98
1959 6.96
1960 6.93
1961 6.92
1962 6.91
1963 6.9
1964 6.89
1965 6.89
1966 6.9
1967 6.91
1968 6.92
1969 6.94
1970 6.94
1971 6.93
1972 6.89
1973 6.84
1974 6.77
1975 6.68
1976 6.59
1977 6.49
1978 6.4
1979 6.31
1980 6.22
1981 6.13
1982 6.02
1983 5.89
1984 5.75
1985 5.6
1986 5.45
1987 5.3
1988 5.17
1989 5.05
1990 4.96
1991 4.88
1992 4.82
1993 4.77
1994 4.72
1995 4.66
1996 4.61
1997 4.54
1998 4.47
1999 4.39
2000 4.3
2001 4.2
2002 4.11
2003 4.01
2004 3.91
2005 3.82
2006 3.74
2007 3.66
2008 3.59
2009 3.52
2010 3.46
2011 3.4
2012 3.35
2013 3.29
2014 3.24
2015 3.19
2016 3.15
2017 3.1
2018 3.05