Year Total
1800 5.25
1801 5.25
1802 5.25
1803 5.25
1804 5.25
1805 5.25
1806 5.25
1807 5.25
1808 5.25
1809 5.25
1810 5.25
1811 5.25
1812 5.25
1813 5.25
1814 5.25
1815 5.25
1816 5.25
1817 5.25
1818 5.25
1819 5.25
1820 5.25
1821 5.25
1822 5.25
1823 5.25
1824 5.25
1825 5.25
1826 5.25
1827 5.25
1828 5.25
1829 5.25
1830 5.25
1831 5.25
1832 5.25
1833 5.25
1834 5.25
1835 5.25
1836 5.25
1837 5.25
1838 5.25
1839 5.25
1840 5.25
1841 5.25
1842 5.25
1843 5.25
1844 5.25
1845 5.25
1846 5.25
1847 5.25
1848 5.25
1849 5.25
1850 5.25
1851 5.25
1852 5.25
1853 5.25
1854 5.25
1855 5.25
1856 5.07
1857 5.29
1858 5.12
1859 4.96
1860 5.06
1861 5.16
1862 4.84
1863 4.73
1864 5.16
1865 5.51
1866 5.75
1867 5.65
1868 5.65
1869 5.61
1870 5.67
1871 5.45
1872 5.29
1873 5.22
1874 5.37
1875 5.39
1876 5.59
1877 5.53
1878 5.62
1879 5.4
1880 5.46
1881 5.09
1882 5
1883 4.86
1884 4.81
1885 4.6
1886 4.44
1887 4.3
1888 4.18
1889 4.03
1890 3.94
1891 3.89
1892 3.73
1893 3.69
1894 3.66
1895 3.59
1896 3.53
1897 3.48
1898 3.45
1899 3.37
1900 3.43
1901 3.53
1902 3.47
1903 3.57
1904 3.61
1905 3.65
1906 3.63
1907 3.66
1908 3.68
1909 3.66
1910 3.51
1911 3.48
1912 3.55
1913 3.5
1914 3.48
1915 3.39
1916 3.48
1917 3.44
1918 3.14
1919 2.87
1920 3.36
1921 3.13
1922 3.11
1923 2.94
1924 2.89
1925 2.84
1926 2.82
1927 2.72
1928 2.62
1929 2.55
1930 2.52
1931 2.56
1932 2.42
1933 2.37
1934 2.36
1935 2.33
1936 2.42
1937 2.53
1938 2.58
1939 2.71
1940 3.03
1941 3.22
1942 3.1
1943 2.85
1944 3.08
1945 3.29
1946 3.63
1947 3.71
1948 3.59
1949 3.5
1950 3.47
1951 3.27
1952 3.32
1953 3.39
1954 3.46
1955 3.49
1956 3.47
1957 3.51
1958 3.56
1959 3.55
1960 3.54
1961 3.61
1962 3.51
1963 3.41
1964 3.22
1965 3.05
1966 3.13
1967 3
1968 3.02
1969 3.01
1970 2.95
1971 3.02
1972 2.9
1973 2.73
1974 2.61
1975 2.46
1976 2.37
1977 2.32
1978 2.19
1979 2.24
1980 2.15
1981 2.16
1982 2.1
1983 2.1
1984 2.12
1985 2.14
1986 2.16
1987 2.24
1988 2.32
1989 2.33
1990 2.4
1991 2.36
1992 2.31
1993 2.22
1994 2.13
1995 2.11
1996 2.07
1997 2.05
1998 1.96
1999 2
2000 1.98
2001 1.96
2002 1.95
2003 1.98
2004 2.02
2005 2.05
2006 2.09
2007 2.11
2008 2.12
2009 2.13
2010 2.12
2011 2.1
2012 2.07
2013 2.05
2014 2.03
2015 2.01
2016 1.99
2017 1.98
2018 1.97