Year Total
1800 5.91
1801 5.91
1802 5.91
1803 5.91
1804 5.91
1805 5.91
1806 5.91
1807 5.91
1808 5.91
1809 5.91
1810 5.91
1811 5.91
1812 5.91
1813 5.91
1814 5.91
1815 5.91
1816 5.91
1817 5.91
1818 5.91
1819 5.91
1820 5.91
1821 5.91
1822 5.91
1823 5.91
1824 5.91
1825 5.91
1826 5.91
1827 5.91
1828 5.91
1829 5.91
1830 5.91
1831 5.91
1832 5.91
1833 5.91
1834 5.91
1835 5.91
1836 5.91
1837 5.91
1838 5.91
1839 5.91
1840 5.91
1841 5.91
1842 5.91
1843 5.91
1844 5.91
1845 5.91
1846 5.91
1847 5.91
1848 5.91
1849 5.91
1850 5.91
1851 5.87
1852 5.83
1853 5.78
1854 5.74
1855 5.7
1856 5.66
1857 5.61
1858 5.57
1859 5.53
1860 5.49
1861 5.44
1862 5.4
1863 5.4
1864 5.39
1865 5.39
1866 5.38
1867 5.38
1868 5.38
1869 5.37
1870 5.37
1871 5.36
1872 5.36
1873 5.35
1874 5.35
1875 5.35
1876 5.34
1877 5.34
1878 5.33
1879 5.33
1880 5.33
1881 5.32
1882 5.32
1883 5.31
1884 5.31
1885 5.3
1886 5.3
1887 5.3
1888 5.29
1889 5.29
1890 5.28
1891 5.28
1892 5.28
1893 5.27
1894 5.27
1895 5.26
1896 5.26
1897 5.25
1898 5.25
1899 5.25
1900 5.24
1901 5.24
1902 5.23
1903 5.23
1904 5.23
1905 5.22
1906 5.22
1907 5.21
1908 5.21
1909 5.2
1910 5.2
1911 5.2
1912 5.19
1913 5.19
1914 5.19
1915 5.18
1916 5.18
1917 5.18
1918 5.17
1919 5.17
1920 5.17
1921 5.16
1922 5.16
1923 5.16
1924 5.15
1925 5.15
1926 5.14
1927 5.14
1928 5.14
1929 5.13
1930 5.13
1931 5.13
1932 5.13
1933 5.14
1934 5.14
1935 5.15
1936 5.15
1937 5.16
1938 5.17
1939 5.17
1940 5.18
1941 5.19
1942 5.19
1943 5.2
1944 5.2
1945 5.21
1946 5.21
1947 5.22
1948 5.22
1949 5.23
1950 5.23
1951 5.13
1952 4.9
1953 4.7
1954 4.51
1955 4.34
1956 4.19
1957 4.07
1958 3.96
1959 3.88
1960 3.8
1961 3.74
1962 3.68
1963 3.6
1964 3.52
1965 3.42
1966 3.31
1967 3.21
1968 3.11
1969 3.02
1970 2.93
1971 2.84
1972 2.76
1973 2.67
1974 2.58
1975 2.49
1976 2.4
1977 2.32
1978 2.24
1979 2.18
1980 2.12
1981 2.08
1982 2.03
1983 2
1984 1.96
1985 1.93
1986 1.9
1987 1.87
1988 1.84
1989 1.8
1990 1.77
1991 1.75
1992 1.73
1993 1.72
1994 1.71
1995 1.71
1996 1.69
1997 1.66
1998 1.62
1999 1.56
2000 1.5
2001 1.43
2002 1.37
2003 1.33
2004 1.3
2005 1.29
2006 1.29
2007 1.29
2008 1.3
2009 1.3
2010 1.31
2011 1.31
2012 1.31
2013 1.32
2014 1.33
2015 1.35
2016 1.36
2017 1.38
2018 1.39