Year Total
1800 5.01
1801 5.01
1802 5.01
1803 5.01
1804 5.01
1805 5.01
1806 5.01
1807 5.01
1808 5.01
1809 5.01
1810 5.01
1811 5.01
1812 5.01
1813 5.01
1814 5.01
1815 5.01
1816 5.01
1817 5.01
1818 5.01
1819 5.01
1820 5.01
1821 5.01
1822 5.01
1823 5.01
1824 5.01
1825 5.01
1826 5.01
1827 5.01
1828 5.01
1829 5.01
1830 5.01
1831 5.01
1832 5.01
1833 5.01
1834 5.01
1835 5.01
1836 5.01
1837 5.01
1838 5.01
1839 5.01
1840 5.01
1841 5.01
1842 5.01
1843 5.01
1844 5.01
1845 5.01
1846 5.01
1847 5.01
1848 5.01
1849 5.01
1850 5.01
1851 5.01
1852 5.01
1853 5.01
1854 5.01
1855 5.01
1856 5.01
1857 5.01
1858 5.01
1859 5.01
1860 5.01
1861 5.01
1862 5.01
1863 5.01
1864 5.01
1865 5.01
1866 5.01
1867 5.01
1868 5.01
1869 5.01
1870 5.01
1871 5.01
1872 5.01
1873 5.01
1874 5.01
1875 5.01
1876 5.01
1877 5.01
1878 5.01
1879 5.01
1880 5.01
1881 4.93
1882 4.85
1883 4.77
1884 4.69
1885 4.61
1886 4.53
1887 4.45
1888 4.36
1889 4.28
1890 4.2
1891 4.12
1892 4.21
1893 4.3
1894 4.39
1895 4.48
1896 4.72
1897 4.96
1898 5.2
1899 5.45
1900 5.69
1901 5.39
1902 5.1
1903 5.25
1904 5.39
1905 5.54
1906 5.69
1907 5.57
1908 5.45
1909 5.33
1910 5.21
1911 5.09
1912 4.98
1913 4.82
1914 4.67
1915 4.52
1916 4.37
1917 4.22
1918 4.36
1919 4.5
1920 4.63
1921 4.77
1922 4.91
1923 4.93
1924 4.95
1925 4.97
1926 4.99
1927 5.01
1928 5.01
1929 5.01
1930 5.01
1931 5.01
1932 5.01
1933 5.01
1934 5.02
1935 5.03
1936 5.03
1937 5.04
1938 5.11
1939 5.18
1940 5.26
1941 5.33
1942 5.41
1943 5.41
1944 5.42
1945 5.43
1946 5.44
1947 5.45
1948 5.46
1949 5.47
1950 5.48
1951 5.6
1952 5.8
1953 5.97
1954 6.1
1955 6.21
1956 6.29
1957 6.34
1958 6.37
1959 6.38
1960 6.37
1961 6.31
1962 6.23
1963 6.14
1964 6.05
1965 5.96
1966 5.86
1967 5.76
1968 5.64
1969 5.52
1970 5.38
1971 5.23
1972 5.06
1973 4.88
1974 4.69
1975 4.5
1976 4.33
1977 4.17
1978 4.03
1979 3.92
1980 3.82
1981 3.73
1982 3.64
1983 3.55
1984 3.45
1985 3.35
1986 3.26
1987 3.19
1988 3.13
1989 3.09
1990 3.07
1991 3.06
1992 3.07
1993 3.07
1994 3.07
1995 3.07
1996 3.07
1997 3.06
1998 3.05
1999 3.04
2000 3.02
2001 2.99
2002 2.96
2003 2.92
2004 2.88
2005 2.84
2006 2.8
2007 2.76
2008 2.72
2009 2.68
2010 2.66
2011 2.63
2012 2.61
2013 2.58
2014 2.56
2015 2.53
2016 2.51
2017 2.49
2018 2.46