Year Total
1801 0
1802 0
1803 0
1804 0
1805 0
1806 0
1807 0
1808 0
1809 0
1810 0
1811 0
1812 0
1813 0
1814 0
1815 0
1816 0
1817 0
1818 0
1819 0
1820 0
1821 0.383
1822 0.383
1823 0.383
1824 0.3829
1825 0.383
1826 0.383
1827 0.383
1828 0.383
1829 0.383
1830 0.383
1831 0.383
1832 0.383
1833 0.383
1834 0.383
1835 0.383
1836 0.383
1837 0.383
1838 0.383
1839 0.383
1840 0.383
1841 0.383
1842 0.383
1843 0.383
1844 0.383
1845 0.383
1846 0.383
1847 0.383
1848 0.383
1849 0.383
1850 0.383
1851 0.3837
1852 0.3837
1853 0.3837
1854 0.3837
1855 0.3837
1856 0.3837
1857 0.3837
1858 0.3837
1859 0.3837
1860 0.3837
1861 0.3837
1862 0.3837
1863 0.3837
1864 0.3837
1865 0.3837
1866 0.3837
1867 0.3837
1868 0.3837
1869 0.3837
1870 0.3837
1871 3.97
1872 3.97
1873 3.97
1874 3.97
1875 3.97
1876 3.97
1877 3.97
1878 3.97
1879 3.97
1880 3.97
1881 3.97
1882 3.97
1883 3.97
1884 3.97
1885 3.97
1886 3.97
1887 3.97
1888 3.97
1889 3.97
1890 3.97
1891 4.205
1892 4.205
1893 4.205
1894 4.205
1895 4.205
1896 4.205
1897 4.205
1898 4.205
1899 4.205
1900 4.205
1901 4.199
1902 -2.729
1903 -2.731
1904 -2.724
1905 -2.727
1906 -2.729
1907 2.853
1908 2.85
1909 2.846
1910 2.851
1911 2.847
1912 7.404
1913 7.007
1914 7.204
1915 7.205
1916 7.205
1917 -2.031
1918 -2.031
1919 -2.71
1920 -1.347
1921 -2.015
1922 3.817
1923 3.813
1924 3.818
1925 3.814
1926 3.818
1927 3.164
1928 3.167
1929 3.163
1930 3.166
1931 3.162
1932 -0.09981
1933 -0.1052
1934 -0.104
1935 -0.1032
1936 -0.1026
1937 -4.765
1938 -4.765
1939 -3.747
1940 -3.748
1941 -3.743
1942 -15.46
1943 -15.46
1944 -15.46
1945 0.4821
1946 0.9793
1947 0.9793
1948 0.9793
1949 0.9793
1950 0.9793
1951 14.83
1952 2.505
1953 3.003
1954 -5.821
1955 13.53
1956 7.123
1957 6.411
1958 -2.262
1959 16.05
1960 3.787
1961 2.852
1962 9.14
1963 3.21
1964 2.158
1965 2.928
1966 -3.801
1967 3.21
1968 7.006
1969 4.58
1970 5.008
1971 3.785
1972 1.269
1973 0.1958
1974 5.827
1975 4.737
1976 6.631
1977 6.47
1978 7.19
1979 5.122
1980 8.588
1981 5.83
1982 5.49
1983 4.298
1984 4.82
1985 2.778
1986 -1.071
1987 -3.969
1988 -11.2
1989 3.956
1990 3.043
1991 -0.4287
1992 3.918
1993 2.807
1994 3.102
1995 2.969
1996 2.893
1997 2.733
1998 2.699
1999 4.045
2000 4.654
2001 3.746
2002 3.763
2003 4.168
2004 3.811
2005 0.04191
2006 11.53
2007 10.52
2008 2.281
2009 3.837
2010 4.053
2011 4.187
2012 6.04
2013 6.247