Year Total
1800 6.03
1801 6.03
1802 6.03
1803 6.03
1804 6.03
1805 6.03
1806 6.03
1807 6.03
1808 6.03
1809 6.03
1810 6.03
1811 6.03
1812 6.03
1813 6.03
1814 6.03
1815 6.03
1816 6.03
1817 6.03
1818 6.03
1819 6.03
1820 6.03
1821 6.03
1822 6.03
1823 6.03
1824 6.03
1825 6.03
1826 6.03
1827 6.03
1828 6.03
1829 6.03
1830 6.03
1831 6.03
1832 6.03
1833 6.03
1834 6.03
1835 6.03
1836 6.03
1837 6.03
1838 6.03
1839 6.03
1840 6.03
1841 6.03
1842 6.03
1843 6.03
1844 6.03
1845 6.03
1846 6.03
1847 6.03
1848 6.03
1849 6.03
1850 6.03
1851 6.03
1852 6.03
1853 6.03
1854 6.03
1855 6.03
1856 6.03
1857 6.03
1858 6.03
1859 6.03
1860 6.03
1861 6.03
1862 6.03
1863 6.03
1864 6.03
1865 6.03
1866 6.03
1867 6.03
1868 6.03
1869 6.03
1870 6.03
1871 6.03
1872 6.03
1873 6.03
1874 6.03
1875 6.03
1876 5.96
1877 5.88
1878 5.81
1879 5.73
1880 5.66
1881 5.58
1882 5.51
1883 5.44
1884 5.36
1885 5.29
1886 5.21
1887 5.14
1888 5.07
1889 4.99
1890 4.92
1891 4.84
1892 4.77
1893 4.69
1894 4.62
1895 4.55
1896 4.47
1897 4.4
1898 4.32
1899 4.25
1900 4.17
1901 4.1
1902 4.07
1903 4.03
1904 4
1905 3.97
1906 4.03
1907 4.1
1908 4.17
1909 4.23
1910 4.3
1911 4.36
1912 4.42
1913 4.48
1914 4.54
1915 4.6
1916 4.48
1917 4.36
1918 4.25
1919 4.13
1920 4.01
1921 3.9
1922 3.78
1923 3.66
1924 3.55
1925 3.43
1926 3.6
1927 3.78
1928 3.95
1929 4.13
1930 4.3
1931 4.31
1932 4.31
1933 4.32
1934 4.32
1935 4.33
1936 4.35
1937 4.37
1938 4.39
1939 4.41
1940 4.44
1941 4.37
1942 4.3
1943 4.23
1944 4.16
1945 4.09
1946 4.04
1947 3.99
1948 3.95
1949 3.9
1950 3.85
1951 3.81
1952 3.73
1953 3.66
1954 3.61
1955 3.57
1956 3.55
1957 3.53
1958 3.52
1959 3.51
1960 3.5
1961 3.47
1962 3.42
1963 3.35
1964 3.25
1965 3.13
1966 3.01
1967 2.89
1968 2.78
1969 2.69
1970 2.61
1971 2.55
1972 2.49
1973 2.44
1974 2.39
1975 2.35
1976 2.32
1977 2.31
1978 2.31
1979 2.33
1980 2.35
1981 2.39
1982 2.42
1983 2.44
1984 2.45
1985 2.46
1986 2.46
1987 2.45
1988 2.44
1989 2.43
1990 2.41
1991 2.38
1992 2.34
1993 2.28
1994 2.21
1995 2.12
1996 2.04
1997 1.95
1998 1.86
1999 1.78
2000 1.72
2001 1.66
2002 1.61
2003 1.58
2004 1.55
2005 1.52
2006 1.5
2007 1.48
2008 1.46
2009 1.44
2010 1.42
2011 1.41
2012 1.39
2013 1.37
2014 1.36
2015 1.35
2016 1.34
2017 1.34
2018 1.34