Year Total
1800 5.16
1801 5.16
1802 5.16
1803 5.16
1804 5.16
1805 5.16
1806 5.16
1807 5.16
1808 5.16
1809 5.16
1810 5.16
1811 5.16
1812 5.16
1813 5.16
1814 5.16
1815 5.16
1816 5.16
1817 5.16
1818 5.16
1819 5.16
1820 5.16
1821 5.16
1822 5.16
1823 5.16
1824 5.16
1825 5.16
1826 5.16
1827 5.16
1828 5.16
1829 5.16
1830 5.16
1831 5.16
1832 5.16
1833 5.16
1834 5.16
1835 5.16
1836 5.16
1837 5.16
1838 5.16
1839 5.16
1840 5.16
1841 5.16
1842 5.16
1843 5.16
1844 5.16
1845 5.16
1846 5.16
1847 5.16
1848 5.16
1849 5.16
1850 5.16
1851 5.16
1852 5.16
1853 5.16
1854 5.16
1855 5.16
1856 5.16
1857 5.16
1858 5.16
1859 5.16
1860 5.16
1861 5.16
1862 5.16
1863 5.16
1864 5.16
1865 5.16
1866 5.16
1867 5.16
1868 5.16
1869 5.16
1870 5.16
1871 5.16
1872 5.16
1873 5.16
1874 5.16
1875 5.16
1876 5.16
1877 5.16
1878 5.16
1879 5.16
1880 5.16
1881 5.16
1882 5.16
1883 5.16
1884 5.16
1885 5.16
1886 5.16
1887 5.16
1888 5.16
1889 5.16
1890 5.16
1891 5.16
1892 5.16
1893 5.16
1894 5.16
1895 5.16
1896 5.16
1897 5.16
1898 5.16
1899 5.16
1900 5.16
1901 5.16
1902 5.16
1903 5.16
1904 5.16
1905 5.16
1906 5.16
1907 5.16
1908 5.16
1909 5.16
1910 5.16
1911 5.16
1912 5.16
1913 5.16
1914 5.16
1915 5.16
1916 5.16
1917 5.16
1918 5.16
1919 5.16
1920 5.16
1921 5.16
1922 5.16
1923 5.16
1924 5.16
1925 5.16
1926 5.16
1927 5.16
1928 5.16
1929 5.16
1930 5.16
1931 5.16
1932 5.16
1933 5.16
1934 5.16
1935 5.16
1936 5.16
1937 5.16
1938 5.16
1939 5.16
1940 5.16
1941 5.16
1942 5.16
1943 5.16
1944 5.16
1945 5.16
1946 5.16
1947 5.16
1948 5.16
1949 5.16
1950 5.16
1951 5.1
1952 5.01
1953 4.95
1954 4.91
1955 4.91
1956 4.93
1957 4.98
1958 5.06
1959 5.16
1960 5.27
1961 5.4
1962 5.53
1963 5.65
1964 5.76
1965 5.84
1966 5.89
1967 5.92
1968 5.9
1969 5.85
1970 5.76
1971 5.63
1972 5.47
1973 5.28
1974 5.07
1975 4.85
1976 4.62
1977 4.41
1978 4.2
1979 4.02
1980 3.85
1981 3.7
1982 3.56
1983 3.43
1984 3.31
1985 3.19
1986 3.08
1987 2.99
1988 2.9
1989 2.82
1990 2.74
1991 2.66
1992 2.59
1993 2.51
1994 2.42
1995 2.35
1996 2.28
1997 2.22
1998 2.18
1999 2.16
2000 2.15
2001 2.16
2002 2.18
2003 2.2
2004 2.22
2005 2.25
2006 2.27
2007 2.29
2008 2.32
2009 2.34
2010 2.36
2011 2.37
2012 2.37
2013 2.37
2014 2.35
2015 2.33
2016 2.31
2017 2.28
2018 2.25