Year Total
1800 5.98
1801 5.98
1802 5.98
1803 5.98
1804 5.98
1805 5.98
1806 5.98
1807 5.98
1808 5.98
1809 5.98
1810 5.98
1811 5.98
1812 5.98
1813 5.98
1814 5.98
1815 5.98
1816 5.98
1817 5.98
1818 5.98
1819 5.98
1820 5.98
1821 5.98
1822 5.98
1823 5.98
1824 5.98
1825 5.98
1826 5.98
1827 5.98
1828 5.98
1829 5.98
1830 5.98
1831 5.98
1832 5.98
1833 5.98
1834 5.98
1835 5.98
1836 5.98
1837 5.98
1838 5.98
1839 5.98
1840 5.98
1841 5.98
1842 5.98
1843 5.98
1844 5.98
1845 5.98
1846 5.98
1847 5.98
1848 5.98
1849 5.98
1850 5.98
1851 5.98
1852 5.98
1853 5.98
1854 5.98
1855 5.98
1856 5.98
1857 5.98
1858 5.98
1859 5.98
1860 5.98
1861 5.98
1862 5.98
1863 5.98
1864 5.98
1865 5.98
1866 5.98
1867 5.98
1868 5.98
1869 5.98
1870 5.98
1871 5.98
1872 5.98
1873 5.98
1874 5.98
1875 5.98
1876 5.98
1877 5.98
1878 5.98
1879 5.98
1880 5.98
1881 5.98
1882 5.98
1883 5.98
1884 5.98
1885 5.98
1886 5.98
1887 5.98
1888 5.98
1889 5.98
1890 5.98
1891 5.98
1892 5.98
1893 5.98
1894 5.98
1895 5.98
1896 5.98
1897 5.98
1898 5.98
1899 5.98
1900 5.98
1901 5.98
1902 5.98
1903 5.98
1904 5.98
1905 5.98
1906 5.98
1907 5.98
1908 5.98
1909 5.98
1910 5.98
1911 5.98
1912 5.98
1913 5.98
1914 5.98
1915 5.98
1916 5.98
1917 5.98
1918 5.98
1919 5.98
1920 5.98
1921 5.98
1922 5.98
1923 5.98
1924 5.98
1925 5.98
1926 5.96
1927 5.95
1928 5.93
1929 5.92
1930 5.9
1931 5.89
1932 5.87
1933 5.86
1934 5.84
1935 5.83
1936 5.81
1937 5.8
1938 5.78
1939 5.76
1940 5.75
1941 5.73
1942 5.72
1943 5.7
1944 5.69
1945 5.67
1946 5.66
1947 5.64
1948 5.63
1949 5.61
1950 5.6
1951 5.72
1952 5.94
1953 6.15
1954 6.34
1955 6.5
1956 6.64
1957 6.76
1958 6.87
1959 6.95
1960 7.02
1961 7.08
1962 7.12
1963 7.15
1964 7.18
1965 7.2
1966 7.22
1967 7.23
1968 7.24
1969 7.24
1970 7.23
1971 7.2
1972 7.16
1973 7.1
1974 7.04
1975 6.98
1976 6.94
1977 6.94
1978 6.96
1979 7.01
1980 7.08
1981 7.15
1982 7.2
1983 7.22
1984 7.19
1985 7.11
1986 6.97
1987 6.78
1988 6.55
1989 6.29
1990 5.99
1991 5.67
1992 5.34
1993 4.99
1994 4.64
1995 4.3
1996 3.98
1997 3.67
1998 3.4
1999 3.16
2000 2.94
2001 2.77
2002 2.63
2003 2.51
2004 2.42
2005 2.34
2006 2.29
2007 2.26
2008 2.24
2009 2.24
2010 2.23
2011 2.22
2012 2.21
2013 2.19
2014 2.17
2015 2.13
2016 2.09
2017 2.05
2018 2.01