Year Total
1800 5.83
1801 5.83
1802 5.83
1803 5.83
1804 5.83
1805 5.83
1806 5.83
1807 5.83
1808 5.83
1809 5.83
1810 5.83
1811 5.83
1812 5.83
1813 5.83
1814 5.83
1815 5.83
1816 5.83
1817 5.83
1818 5.83
1819 5.83
1820 5.83
1821 5.83
1822 5.83
1823 5.83
1824 5.83
1825 5.83
1826 5.83
1827 5.83
1828 5.83
1829 5.83
1830 5.83
1831 5.83
1832 5.83
1833 5.83
1834 5.83
1835 5.83
1836 5.83
1837 5.83
1838 5.83
1839 5.83
1840 5.83
1841 5.83
1842 5.83
1843 5.83
1844 5.83
1845 5.83
1846 5.83
1847 5.83
1848 5.83
1849 5.83
1850 5.83
1851 5.83
1852 5.83
1853 5.83
1854 5.83
1855 5.83
1856 5.83
1857 5.83
1858 5.83
1859 5.83
1860 5.83
1861 5.83
1862 5.83
1863 5.83
1864 5.83
1865 5.83
1866 5.83
1867 5.83
1868 5.83
1869 5.83
1870 5.83
1871 5.83
1872 5.83
1873 5.83
1874 5.83
1875 5.83
1876 5.822
1877 5.815
1878 5.807
1879 5.8
1880 5.792
1881 5.785
1882 5.777
1883 5.77
1884 5.762
1885 5.755
1886 5.747
1887 5.74
1888 5.732
1889 5.725
1890 5.717
1891 5.71
1892 5.702
1893 5.695
1894 5.687
1895 5.68
1896 5.672
1897 5.665
1898 5.657
1899 5.65
1900 5.642
1901 5.635
1902 5.627
1903 5.62
1904 5.612
1905 5.605
1906 5.597
1907 5.67
1908 5.539
1909 5.829
1910 5.989
1911 6.061
1912 5.989
1913 5.916
1914 6.003
1915 5.8
1916 5.409
1917 5.931
1918 5.756
1919 5.582
1920 5.728
1921 6.206
1922 6.061
1923 5.67
1924 6.003
1925 5.916
1926 6.337
1927 6.264
1928 6.337
1929 6.38
1930 6.496
1931 6.641
1932 6.38
1933 6.423
1934 6.467
1935 6.511
1936 6.308
1937 6.496
1938 6.25
1939 6.337
1940 6.235
1941 5.96
1942 5.843
1943 5.8
1944 5.738
1945 5.677
1946 5.615
1947 5.553
1948 5.8
1949 6.046
1950 6.293
1951 6.337
1952 6.38
1953 6.423
1954 6.467
1955 6.489
1956 6.51
1957 6.326
1958 6.142
1959 5.958
1960 5.774
1961 5.59
1962 5.436
1963 5.282
1964 5.128
1965 4.974
1966 4.82
1967 4.598
1968 4.376
1969 4.154
1970 3.932
1971 3.71
1972 3.586
1973 3.462
1974 3.338
1975 3.214
1976 3.09
1977 2.902
1978 2.715
1979 2.67
1980 2.515
1981 2.455
1982 2.32
1983 2.17
1984 2.055
1985 1.88
1986 1.68
1987 1.7
1988 1.855
1989 1.68
1990 1.81
1991 1.72
1992 1.73
1993 1.76
1994 1.755
1995 1.775
1996 1.76
1997 1.77
1998 1.465
1999 1.555
2000 1.68
2001 1.4
2002 1.34
2003 1.235
2004 1.18
2005 1.115
2006 1.115
2007 1.1
2008 1.05
2009 1.03
2010 0.895
2011 1.065
2012 1.27
2013 1.065