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
1822 0
1823 0
1824 0
1825 0
1826 0
1827 0
1828 0
1829 0
1830 0
1831 -3.504
1832 -3.504
1833 -3.504
1834 -3.504
1835 -3.504
1836 -3.504
1837 -3.503
1838 -3.504
1839 -3.504
1840 -3.504
1841 13.91
1842 13.91
1843 13.91
1844 13.91
1845 13.91
1846 13.91
1847 13.91
1848 13.91
1849 13.91
1850 13.91
1851 10.98
1852 10.98
1853 10.98
1854 10.98
1855 10.98
1856 10.98
1857 10.98
1858 10.98
1859 10.98
1860 10.98
1861 11.94
1862 11.94
1863 11.94
1864 11.94
1865 11.94
1866 11.94
1867 11.94
1868 11.94
1869 11.94
1870 11.94
1871 7.032
1872 16.77
1873 13.85
1874 9.91
1875 6.148
1876 5.019
1877 13.97
1878 11.29
1879 -11.59
1880 10.49
1881 4.154
1882 -0.2849
1883 -0.8571
1884 10.37
1885 -0.5222
1886 2.362
1887 2.308
1888 0
1889 5.263
1890 2.857
1891 0.6944
1892 3.678
1893 2.439
1894 -3.247
1895 3.579
1896 11.45
1897 1.163
1898 2.874
1899 3.352
1900 8.108
1901 0.3333
1902 7.641
1903 9.414
1904 -0.4231
1905 9.207
1906 9.468
1907 6.043
1908 -6.927
1909 1.441
1910 13.73
1911 5.515
1912 -2.959
1913 1.626
1914 2.6
1915 0.4873
1916 -0.7759
1917 -2.444
1918 -1.603
1919 11.2
1920 10.9
1921 -6.606
1922 -3.448
1923 8.059
1924 1.78
1925 5.329
1926 -5.296
1927 -2.838
1928 11.08
1929 3.558
1930 -4.332
1931 -8.509
1932 -2.474
1933 6.649
1934 5.004
1935 4.688
1936 18.58
1937 5.412
1938 7.045
1939 1.394
1940 -1.925
1941 -3.141
1942 11
1943 2.087
1944 0.4088
1945 2.952
1946 7.711
1947 11.93
1948 -9.922
1949 10.79
1950 14.66
1951 -7.601
1952 4.212
1953 3.161
1954 13.93
1955 2.079
1956 5.416
1957 2.626
1958 3.659
1959 7.019
1960 0.3746
1961 5.202
1962 2.059
1963 6.373
1964 4.89
1965 6.295
1966 6.056
1967 -4.731
1968 -0.03326
1969 10.65
1970 -1.259
1971 5.376
1972 4.461
1973 6.973
1974 5.487
1975 -1.747
1976 2.129
1977 -4.79
1978 0.5863
1979 2.288
1980 0.8728
1981 4.955
1982 1.829
1983 2.495
1984 4.75
1985 0.963
1986 2.463
1987 0.7626
1988 -0.04119
1989 1.425
1990 0.3049
1991 -1.025
1992 1.561
1993 7.149
1994 5.747
1995 4.174
1996 3.121
1997 0.8704
1998 0.00028
1999 4.825
2000 2.026
2001 3.723
2002 4.863
2003 3.841
2004 4.064
2005 2.241
2006 3.058
2007 3.596
2008 -0.6855
2009 -1.733
2010 1.628
2011 1.676
2012 3.001
2013 2.521