Year Total
1801 0.0236
1802 0.0236
1803 0.0236
1804 0.0236
1805 0.0236
1806 0.0236
1807 0.0236
1808 0.0236
1809 0.0236
1810 0.0236
1811 0.0236
1812 0.0236
1813 0.0236
1814 0.0236
1815 0.0236
1816 0.0236
1817 0.0236
1818 0.0236
1819 0.0236
1820 0.0236
1821 0.5822
1822 0.5822
1823 0.5822
1824 0.5822
1825 0.5822
1826 0.5822
1827 0.5822
1828 0.5822
1829 0.5822
1830 0.5822
1831 0.5822
1832 0.5822
1833 0.5822
1834 0.5822
1835 0.5822
1836 0.5822
1837 0.5822
1838 0.5822
1839 0.5822
1840 0.5822
1841 0.5822
1842 0.5822
1843 0.5822
1844 0.5822
1845 0.5822
1846 0.5822
1847 0.5822
1848 0.5822
1849 0.5822
1850 0.5822
1851 0.5822
1852 0.5822
1853 0.5822
1854 0.5822
1855 0.5822
1856 0.5822
1857 0.5822
1858 0.5822
1859 0.5822
1860 0.5822
1861 0.5822
1862 0.5822
1863 0.5822
1864 0.5822
1865 0.5822
1866 0.5822
1867 0.5822
1868 0.5822
1869 0.5822
1870 0.5822
1871 1.143
1872 1.143
1873 1.142
1874 1.144
1875 1.143
1876 1.143
1877 1.142
1878 1.144
1879 1.143
1880 1.142
1881 1.144
1882 1.143
1883 1.142
1884 1.144
1885 1.143
1886 1.142
1887 1.144
1888 1.143
1889 1.142
1890 1.143
1891 1.143
1892 1.142
1893 1.143
1894 1.144
1895 1.141
1896 1.145
1897 1.142
1898 1.143
1899 1.144
1900 1.143
1901 1.142
1902 1.143
1903 1.144
1904 1.143
1905 1.142
1906 1.143
1907 1.142
1908 1.143
1909 1.144
1910 1.143
1911 1.142
1912 1.143
1913 1.144
1914 3.689
1915 3.689
1916 3.69
1917 3.689
1918 3.689
1919 3.69
1920 3.688
1921 3.69
1922 3.689
1923 3.689
1924 3.689
1925 3.689
1926 3.689
1927 3.689
1928 3.689
1929 3.689
1930 3.689
1931 3.689
1932 3.69
1933 3.688
1934 3.689
1935 3.69
1936 3.688
1937 3.689
1938 3.69
1939 3.689
1940 3.689
1941 3.689
1942 3.689
1943 3.689
1944 3.69
1945 3.689
1946 3.689
1947 3.69
1948 3.688
1949 3.69
1950 3.689
1951 0.2019
1952 5.381
1953 7.55
1954 7.5
1955 6.327
1956 4.959
1957 4.102
1958 4.306
1959 11.87
1960 14.91
1961 18.31
1962 20.75
1963 21.28
1964 19.99
1965 18.18
1966 16.39
1967 15.82
1968 17.28
1969 20.84
1970 24.99
1971 13.83
1972 13.68
1973 81.68
1974 189.7
1975 32.25
1976 15.12
1977 17.62
1978 -2.296
1979 24.57
1980 25.68
1981 1.89
1982 -9.298
1983 -6.112
1984 3.407
1985 -2.823
1986 -19
1987 6.528
1988 -2.016
1989 13.97
1990 18.08
1991 0.3894
1992 2.9
1993 -0.853
1994 7.818
1995 6.388
1996 5.143
1997 8.097
1998 0.8892
1999 3.58
2000 11.24
2001 1.864
2002 0.8245
2003 11.47
2004 12.95
2005 15.76
2006 21.09
2007 16.4
2008 13.9
2009 0.107
2010 6.469
2011 7.283
2012 4.085
2013 2.986