Year Total
1801 0.386
1802 0.386
1803 0.386
1804 0.386
1805 0.386
1806 0.386
1807 0.386
1808 0.386
1809 0.386
1810 0.386
1811 0.386
1812 0.386
1813 0.386
1814 0.386
1815 0.386
1816 0.386
1817 0.386
1818 0.386
1819 0.386
1820 0.386
1821 1.07
1822 1.07
1823 1.07
1824 1.07
1825 1.07
1826 1.07
1827 1.07
1828 1.07
1829 1.07
1830 1.07
1831 1.07
1832 1.07
1833 1.07
1834 1.07
1835 1.07
1836 1.07
1837 1.07
1838 1.07
1839 1.07
1840 1.07
1841 1.07
1842 1.07
1843 1.07
1844 1.07
1845 1.07
1846 1.07
1847 1.07
1848 1.07
1849 1.07
1850 1.07
1851 1.07
1852 1.07
1853 1.07
1854 1.07
1855 1.07
1856 1.07
1857 1.07
1858 1.07
1859 1.07
1860 1.07
1861 1.07
1862 1.07
1863 1.07
1864 1.07
1865 1.07
1866 1.07
1867 1.07
1868 1.07
1869 1.07
1870 1.07
1871 1.07
1872 1.07
1873 1.07
1874 1.07
1875 1.07
1876 1.07
1877 1.07
1878 1.07
1879 1.07
1880 1.07
1881 1.07
1882 1.07
1883 1.07
1884 1.07
1885 1.07
1886 1.07
1887 1.07
1888 1.07
1889 1.07
1890 1.07
1891 1.07
1892 1.07
1893 1.07
1894 1.07
1895 1.07
1896 1.07
1897 1.07
1898 1.07
1899 1.07
1900 1.07
1901 1.07
1902 1.07
1903 1.07
1904 1.07
1905 1.07
1906 1.07
1907 1.07
1908 1.07
1909 1.07
1910 1.07
1911 1.07
1912 1.07
1913 1.07
1914 1.941
1915 1.941
1916 1.941
1917 1.941
1918 1.941
1919 1.941
1920 1.941
1921 1.941
1922 1.941
1923 1.941
1924 1.941
1925 1.941
1926 1.941
1927 1.941
1928 1.941
1929 1.941
1930 1.941
1931 1.941
1932 1.941
1933 1.941
1934 1.941
1935 1.941
1936 1.941
1937 1.941
1938 1.941
1939 1.941
1940 1.941
1941 1.941
1942 1.941
1943 1.941
1944 1.941
1945 1.941
1946 1.941
1947 1.941
1948 1.941
1949 1.941
1950 1.941
1951 4.688
1952 4.778
1953 4.811
1954 4.901
1955 4.864
1956 4.845
1957 4.929
1958 4.92
1959 4.561
1960 9.386
1961 13.72
1962 0.1365
1963 13.78
1964 18.73
1965 -2.947
1966 10.71
1967 3.043
1968 13.73
1969 6.47
1970 8.617
1971 9.458
1972 4.235
1973 5.939
1974 4.328
1975 8.253
1976 12.91
1977 7.317
1978 10.91
1979 2.394
1980 -10.96
1981 3.5
1982 0.2009
1983 -3.9
1984 -2.701
1985 4.501
1986 3.259
1987 -0.3468
1988 1.107
1989 11.89
1990 -1.23
1991 0.05663
1992 -0.6225
1993 -0.3986
1994 2.144
1995 7.053
1996 6.745
1997 5.682
1998 5.129
1999 1.943
2000 -2.668
2001 0.116
2002 -1.667
2003 -1.363
2004 1.233
2005 1.723
2006 0.6982
2007 1.606
2008 2.316
2009 3.798
2010 2.996
2011 -4.729
2012 8.896
2013 7.292