Year Total
1800 6.83
1801 6.83
1802 6.83
1803 6.83
1804 6.83
1805 6.83
1806 6.83
1807 6.83
1808 6.83
1809 6.83
1810 6.83
1811 6.83
1812 6.83
1813 6.83
1814 6.83
1815 6.83
1816 6.83
1817 6.83
1818 6.83
1819 6.83
1820 6.83
1821 6.83
1822 6.83
1823 6.83
1824 6.83
1825 6.83
1826 6.83
1827 6.83
1828 6.83
1829 6.83
1830 6.83
1831 6.83
1832 6.83
1833 6.83
1834 6.83
1835 6.83
1836 6.83
1837 6.83
1838 6.83
1839 6.83
1840 6.83
1841 6.83
1842 6.83
1843 6.83
1844 6.83
1845 6.83
1846 6.83
1847 6.83
1848 6.83
1849 6.83
1850 6.83
1851 6.83
1852 6.83
1853 6.83
1854 6.83
1855 6.83
1856 6.83
1857 6.83
1858 6.83
1859 6.83
1860 6.83
1861 6.83
1862 6.83
1863 6.83
1864 6.83
1865 6.83
1866 6.83
1867 6.83
1868 6.83
1869 6.83
1870 6.83
1871 6.83
1872 6.83
1873 6.83
1874 6.83
1875 6.83
1876 6.83
1877 6.83
1878 6.83
1879 6.83
1880 6.83
1881 6.83
1882 6.83
1883 6.83
1884 6.83
1885 6.83
1886 6.83
1887 6.83
1888 6.83
1889 6.83
1890 6.83
1891 6.83
1892 6.83
1893 6.83
1894 6.83
1895 6.83
1896 6.83
1897 6.83
1898 6.83
1899 6.83
1900 6.83
1901 6.83
1902 6.83
1903 6.83
1904 6.83
1905 6.83
1906 6.83
1907 6.83
1908 6.83
1909 6.83
1910 6.83
1911 6.83
1912 6.83
1913 6.83
1914 6.83
1915 6.83
1916 6.83
1917 6.83
1918 6.83
1919 6.83
1920 6.83
1921 6.83
1922 6.83
1923 6.83
1924 6.83
1925 6.83
1926 6.83
1927 6.83
1928 6.83
1929 6.83
1930 6.84
1931 6.84
1932 6.84
1933 6.84
1934 6.85
1935 6.85
1936 6.86
1937 6.87
1938 6.87
1939 6.88
1940 6.89
1941 6.9
1942 6.91
1943 6.93
1944 6.94
1945 6.95
1946 6.97
1947 6.99
1948 7
1949 7.02
1950 7.04
1951 7.06
1952 7.1
1953 7.14
1954 7.18
1955 7.22
1956 7.26
1957 7.31
1958 7.36
1959 7.41
1960 7.45
1961 7.47
1962 7.49
1963 7.51
1964 7.52
1965 7.53
1966 7.54
1967 7.54
1968 7.55
1969 7.56
1970 7.57
1971 7.58
1972 7.6
1973 7.62
1974 7.64
1975 7.67
1976 7.7
1977 7.74
1978 7.78
1979 7.81
1980 7.84
1981 7.87
1982 7.88
1983 7.89
1984 7.88
1985 7.87
1986 7.85
1987 7.82
1988 7.8
1989 7.79
1990 7.77
1991 7.76
1992 7.75
1993 7.74
1994 7.73
1995 7.73
1996 7.72
1997 7.71
1998 7.7
1999 7.69
2000 7.68
2001 7.67
2002 7.66
2003 7.64
2004 7.63
2005 7.61
2006 7.59
2007 7.57
2008 7.54
2009 7.52
2010 7.49
2011 7.46
2012 7.42
2013 7.38
2014 7.34
2015 7.29
2016 7.24
2017 7.18
2018 7.13