Year Total
1801 0.8896
1802 0.8896
1803 0.8897
1804 0.8896
1805 0.8896
1806 0.8897
1807 0.8896
1808 0.8897
1809 0.8896
1810 0.8897
1811 0.8896
1812 0.8896
1813 0.8896
1814 0.8897
1815 0.8896
1816 0.8896
1817 0.8896
1818 0.8896
1819 0.8897
1820 0.8896
1821 2.124
1822 2.124
1823 2.124
1824 2.124
1825 2.124
1826 2.124
1827 2.124
1828 2.124
1829 2.124
1830 2.124
1831 2.124
1832 2.124
1833 2.124
1834 2.124
1835 2.124
1836 2.124
1837 2.124
1838 2.124
1839 2.124
1840 2.124
1841 2.124
1842 2.124
1843 2.124
1844 2.124
1845 2.124
1846 2.124
1847 2.124
1848 2.124
1849 2.124
1850 2.124
1851 2.061
1852 2.061
1853 2.061
1854 2.061
1855 2.061
1856 2.061
1857 2.061
1858 2.061
1859 2.061
1860 2.061
1861 2.061
1862 2.061
1863 2.061
1864 2.061
1865 2.061
1866 2.061
1867 2.061
1868 2.061
1869 2.061
1870 2.061
1871 2.09
1872 2.09
1873 2.09
1874 2.09
1875 2.09
1876 2.09
1877 2.09
1878 2.09
1879 2.09
1880 2.09
1881 2.09
1882 2.09
1883 2.09
1884 2.09
1885 2.09
1886 2.09
1887 2.09
1888 2.09
1889 2.09
1890 2.09
1891 1.876
1892 1.876
1893 1.876
1894 1.876
1895 1.876
1896 1.876
1897 1.876
1898 1.876
1899 1.876
1900 1.876
1901 2.383
1902 2.383
1903 2.383
1904 2.383
1905 2.383
1906 2.383
1907 2.383
1908 2.383
1909 2.383
1910 2.383
1911 3.453
1912 3.453
1913 3.453
1914 -2.681
1915 -2.681
1916 -2.681
1917 -2.681
1918 -2.681
1919 -2.681
1920 -2.681
1921 -1.373
1922 -1.01
1923 -1.109
1924 -1.127
1925 -1.056
1926 -1.069
1927 0
1928 0
1929 -4.577
1930 7.194
1931 2.349
1932 -5.574
1933 4.745
1934 1.105
1935 2.186
1936 1.07
1937 -4.233
1938 11.05
1939 -3.187
1940 -3.159
1941 -4.91
1942 -3.713
1943 -4.103
1944 -3.467
1945 -4.211
1946 -3.856
1947 -4.841
1948 -3.842
1949 21.77
1950 22.02
1951 8.174
1952 7.752
1953 7.239
1954 7.303
1955 6.703
1956 4.066
1957 4.136
1958 4.211
1959 4.452
1960 4.271
1961 6.548
1962 3.476
1963 7.041
1964 6.397
1965 6.57
1966 11.96
1967 5.102
1968 1.21
1969 4.465
1970 2.265
1971 14.14
1972 6.477
1973 3.306
1974 5.547
1975 4.375
1976 5.122
1977 2.239
1978 3.387
1979 2.964
1980 0.4231
1981 -0.5868
1982 0.1094
1983 -0.7128
1984 4.181
1985 -0.01179
1986 1.891
1987 -1.922
1988 -0.08645
1989 -3.196
1990 -10.8
1991 -12.89
1992 -9.048
1993 1.061
1994 3.407
1995 6.709
1996 3.677
1997 -6.254
1998 -4.997
1999 -1.442
2000 1.813
2001 5.375
2002 4.687
2003 4.605
2004 8.224
2005 3.869
2006 7.714
2007 6.139
2008 7.248
2009 -6.663
2010 -1.21
2011 2.219
2012 0.685
2013 3.493