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 -0.8579
1822 -0.8579
1823 -0.8576
1824 -0.8579
1825 -0.8579
1826 -0.8579
1827 -0.8579
1828 -0.8576
1829 -0.8579
1830 -0.8579
1831 -0.8576
1832 -0.8579
1833 -0.8579
1834 -0.8579
1835 -0.8577
1836 -0.8579
1837 -0.8579
1838 -0.8577
1839 -0.8579
1840 -0.8577
1841 -0.8579
1842 -0.8579
1843 -0.8577
1844 -0.8579
1845 -0.8577
1846 -0.8579
1847 -0.8577
1848 -0.8579
1849 -0.8577
1850 -0.8579
1851 1.042
1852 1.042
1853 1.042
1854 1.042
1855 1.042
1856 1.042
1857 1.042
1858 1.042
1859 1.042
1860 1.042
1861 1.042
1862 1.042
1863 1.042
1864 1.042
1865 1.042
1866 1.042
1867 1.042
1868 1.042
1869 1.042
1870 1.042
1871 1.531
1872 1.531
1873 1.531
1874 1.531
1875 1.532
1876 1.531
1877 1.531
1878 1.531
1879 1.531
1880 1.532
1881 1.531
1882 1.531
1883 1.531
1884 1.531
1885 1.531
1886 1.531
1887 1.531
1888 1.531
1889 1.531
1890 1.531
1891 1.531
1892 1.531
1893 1.531
1894 1.531
1895 1.531
1896 1.531
1897 1.531
1898 1.531
1899 1.531
1900 1.531
1901 1.412
1902 1.538
1903 1.387
1904 1.51
1905 1.495
1906 1.481
1907 1.467
1908 1.454
1909 1.441
1910 1.428
1911 1.539
1912 1.402
1913 1.511
1914 2.261
1915 2.138
1916 2.259
1917 2.137
1918 2.257
1919 2.135
1920 2.254
1921 2.492
1922 4.147
1923 3.287
1924 2.925
1925 3.028
1926 4.135
1927 3.649
1928 4.05
1929 3.9
1930 4.378
1931 4.925
1932 4.053
1933 3.912
1934 3.402
1935 3.288
1936 3.452
1937 2.978
1938 3.769
1939 2.355
1940 1.711
1941 1.433
1942 1.899
1943 18
1944 13.69
1945 13.41
1946 15.64
1947 -6.259
1948 -2.612
1949 -2.57
1950 -2.258
1951 9.003
1952 8.833
1953 14.58
1954 11.68
1955 10.24
1956 9.674
1957 13.88
1958 0.5986
1959 4.496
1960 5.699
1961 3.292
1962 2.362
1963 2.979
1964 7.039
1965 7.264
1966 3.256
1967 2.76
1968 4.475
1969 7.216
1970 12
1971 0.2308
1972 2.989
1973 8.756
1974 -3.944
1975 -0.2649
1976 -6.176
1977 -2.106
1978 0.7234
1979 -1.899
1980 -5.202
1981 2.846
1982 1.215
1983 3.646
1984 0.3386
1985 -3.709
1986 2.344
1987 8.21
1988 3.186
1989 6.968
1990 5.578
1991 0.5038
1992 2.4
1993 1.406
1994 1.558
1995 1.271
1996 -1.853
1997 -1.708
1998 -0.5708
1999 -0.2365
2000 1
2001 1.661
2002 0.9317
2003 2.174
2004 0.7238
2005 1.176
2006 2.857
2007 1.42
2008 -0.8221
2009 -3.102
2010 -1.465
2011 1.476
2012 -0.6312
2013 0.3337