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 1.385
1822 1.385
1823 1.385
1824 1.385
1825 1.385
1826 1.385
1827 1.385
1828 1.385
1829 1.385
1830 1.385
1831 1.385
1832 1.385
1833 1.385
1834 1.385
1835 1.385
1836 1.385
1837 1.385
1838 1.385
1839 1.385
1840 1.385
1841 1.385
1842 1.385
1843 1.385
1844 1.385
1845 1.385
1846 1.385
1847 1.385
1848 1.385
1849 1.385
1850 1.385
1851 1.385
1852 1.385
1853 1.385
1854 1.385
1855 1.385
1856 1.385
1857 1.385
1858 1.385
1859 1.385
1860 1.385
1861 1.385
1862 1.385
1863 1.385
1864 1.385
1865 1.385
1866 1.385
1867 1.385
1868 1.385
1869 1.385
1870 1.385
1871 1.385
1872 1.385
1873 1.385
1874 1.385
1875 1.385
1876 1.385
1877 1.385
1878 1.385
1879 1.385
1880 1.385
1881 1.385
1882 1.385
1883 1.385
1884 1.385
1885 1.385
1886 -3.129
1887 17.82
1888 -3.07
1889 -6.306
1890 0.3484
1891 -7.703
1892 10.31
1893 14.19
1894 14.56
1895 -6.757
1896 10.98
1897 -0.9233
1898 3.443
1899 6.924
1900 -1.402
1901 3.277
1902 9.495
1903 -6.189
1904 11.43
1905 -10.81
1906 -3.695
1907 -3.176
1908 10.04
1909 4.616
1910 7.519
1911 -6.906
1912 8.87
1913 5.855
1914 -3.78
1915 3.704
1916 0.6653
1917 -21.15
1918 -21.15
1919 -21.15
1920 -3.429
1921 -3.429
1922 13.08
1923 13.08
1924 13.08
1925 13.08
1926 13.08
1927 13.08
1928 13.08
1929 1.935
1930 5.312
1931 1.676
1932 -0.7918
1933 4.553
1934 10.01
1935 15.21
1936 7.617
1937 9.123
1938 0.4793
1939 4.844
1940 -3.433
1941 -1.128
1942 -1.128
1943 -1.128
1944 -1.128
1945 -1.128
1946 -1.128
1947 11.96
1948 13.84
1949 10.05
1950 9.144
1951 0.2078
1952 6.296
1953 4.219
1954 4.739
1955 8.31
1956 9.28
1957 1.74
1958 7.152
1959 -1.473
1960 9.064
1961 5.513
1962 2.623
1963 -2.278
1964 12.98
1965 5.753
1966 7.536
1967 6.25
1968 4.456
1969 4.778
1970 12.05
1971 2.471
1972 2.837
1973 6.483
1974 8.808
1975 7.381
1976 6.098
1977 6.897
1978 7.429
1979 7.37
1980 4.576
1981 5.269
1982 2.006
1983 4.306
1984 5.425
1985 4.933
1986 -8.194
1987 1.253
1988 5.535
1989 -7.185
1990 -14.74
1991 -21.01
1992 -44.81
1993 -29.17
1994 -10.25
1995 2.716
1996 11.26
1997 10.52
1998 3.054
1999 2.785
2000 1.736
2001 4.674
2002 5.317
2003 10.91
2004 5.779
2005 9.624
2006 6.581
2007 11.83
2008 2.098
2009 -4.294
2010 4.518
2011 5.819
2012 4.911
2013 2.927