Year Total
1800 5.51
1801 5.51
1802 5.51
1803 5.51
1804 5.51
1805 5.51
1806 5.51
1807 5.51
1808 5.51
1809 5.51
1810 5.51
1811 5.51
1812 5.51
1813 5.51
1814 5.51
1815 5.51
1816 5.51
1817 5.51
1818 5.51
1819 5.51
1820 5.51
1821 5.51
1822 5.51
1823 5.51
1824 5.51
1825 5.51
1826 5.51
1827 5.51
1828 5.51
1829 5.51
1830 5.51
1831 5.51
1832 5.51
1833 5.51
1834 5.51
1835 5.51
1836 5.51
1837 5.51
1838 5.51
1839 5.51
1840 5.51
1841 5.51
1842 5.51
1843 5.51
1844 5.51
1845 5.51
1846 5.51
1847 5.51
1848 5.51
1849 5.51
1850 5.51
1851 5.51
1852 5.51
1853 5.51
1854 5.51
1855 5.51
1856 5.51
1857 5.51
1858 5.51
1859 5.51
1860 5.51
1861 5.51
1862 5.51
1863 5.51
1864 5.51
1865 5.51
1866 5.51
1867 5.51
1868 5.51
1869 5.51
1870 5.51
1871 5.51
1872 5.51
1873 5.51
1874 5.51
1875 5.51
1876 5.51
1877 5.51
1878 5.51
1879 5.51
1880 5.51
1881 5.51
1882 5.51
1883 5.51
1884 5.51
1885 5.51
1886 5.51
1887 5.51
1888 5.51
1889 5.51
1890 5.51
1891 5.51
1892 5.51
1893 5.51
1894 5.51
1895 5.51
1896 5.51
1897 5.51
1898 5.51
1899 5.51
1900 5.51
1901 5.51
1902 5.51
1903 5.51
1904 5.51
1905 5.51
1906 5.51
1907 5.51
1908 5.51
1909 5.51
1910 5.51
1911 5.51
1912 5.51
1913 5.51
1914 5.51
1915 5.51
1916 5.51
1917 5.51
1918 5.51
1919 5.51
1920 5.51
1921 5.51
1922 5.51
1923 5.51
1924 5.51
1925 5.51
1926 5.51
1927 5.51
1928 5.51
1929 5.51
1930 5.51
1931 5.51
1932 5.51
1933 5.51
1934 5.51
1935 5.51
1936 5.52
1937 5.52
1938 5.52
1939 5.52
1940 5.53
1941 5.53
1942 5.53
1943 5.54
1944 5.54
1945 5.55
1946 5.56
1947 5.56
1948 5.57
1949 5.57
1950 5.58
1951 5.59
1952 5.59
1953 5.6
1954 5.6
1955 5.61
1956 5.61
1957 5.62
1958 5.63
1959 5.64
1960 5.65
1961 5.66
1962 5.67
1963 5.69
1964 5.71
1965 5.73
1966 5.76
1967 5.78
1968 5.79
1969 5.8
1970 5.81
1971 5.81
1972 5.81
1973 5.8
1974 5.8
1975 5.79
1976 5.79
1977 5.8
1978 5.8
1979 5.82
1980 5.84
1981 5.86
1982 5.88
1983 5.9
1984 5.93
1985 5.95
1986 5.96
1987 5.97
1988 5.98
1989 5.99
1990 5.99
1991 5.99
1992 5.98
1993 5.98
1994 5.98
1995 5.97
1996 5.96
1997 5.94
1998 5.91
1999 5.88
2000 5.83
2001 5.79
2002 5.73
2003 5.68
2004 5.62
2005 5.56
2006 5.5
2007 5.43
2008 5.36
2009 5.29
2010 5.21
2011 5.13
2012 5.04
2013 4.95
2014 4.86
2015 4.78
2016 4.69
2017 4.6
2018 4.51