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 1.451
1822 1.451
1823 1.451
1824 1.451
1825 1.451
1826 1.451
1827 1.451
1828 1.451
1829 1.451
1830 1.451
1831 1.451
1832 1.451
1833 1.451
1834 1.451
1835 1.451
1836 1.451
1837 1.451
1838 1.451
1839 1.451
1840 1.451
1841 1.451
1842 1.451
1843 1.451
1844 1.451
1845 1.451
1846 1.451
1847 1.451
1848 1.451
1849 1.451
1850 1.451
1851 1.451
1852 1.451
1853 1.451
1854 1.451
1855 1.451
1856 1.451
1857 1.451
1858 1.451
1859 1.451
1860 1.451
1861 1.451
1862 1.451
1863 1.451
1864 1.451
1865 1.451
1866 1.451
1867 1.451
1868 1.451
1869 1.451
1870 1.451
1871 1.451
1872 1.451
1873 1.451
1874 1.451
1875 1.451
1876 1.451
1877 1.451
1878 1.451
1879 1.451
1880 1.451
1881 1.451
1882 1.451
1883 1.451
1884 1.451
1885 1.451
1886 1.451
1887 1.451
1888 1.451
1889 1.451
1890 1.451
1891 1.451
1892 1.451
1893 1.451
1894 1.451
1895 1.451
1896 1.451
1897 1.451
1898 1.451
1899 1.451
1900 1.451
1901 1.451
1902 1.451
1903 1.451
1904 1.451
1905 1.451
1906 1.451
1907 1.451
1908 1.451
1909 1.451
1910 1.451
1911 1.451
1912 1.451
1913 1.451
1914 1.677
1915 1.677
1916 1.677
1917 1.677
1918 1.677
1919 1.677
1920 1.677
1921 1.677
1922 1.677
1923 1.677
1924 1.677
1925 1.677
1926 1.677
1927 1.677
1928 1.677
1929 1.677
1930 1.677
1931 1.677
1932 1.677
1933 1.677
1934 1.677
1935 1.677
1936 1.677
1937 1.677
1938 1.677
1939 1.677
1940 1.677
1941 1.677
1942 1.677
1943 1.677
1944 1.677
1945 1.677
1946 1.677
1947 1.677
1948 1.677
1949 1.677
1950 1.677
1951 -1.767
1952 -1.644
1953 -4.291
1954 1.394
1955 -1.356
1956 -1.285
1957 -1.209
1958 2.522
1959 2.644
1960 2.028
1961 2.262
1962 -4.339
1963 3.703
1964 5.936
1965 4.339
1966 2.89
1967 0.2176
1968 3.095
1969 2.294
1970 1.446
1971 -0.09012
1972 8.226
1973 1.867
1974 -7.925
1975 3.885
1976 3.92
1977 5.265
1978 2.847
1979 7.703
1980 9.398
1981 5.606
1982 10.67
1983 -4.504
1984 7.71
1985 7.202
1986 1.804
1987 -1.986
1988 2.561
1989 -2.478
1990 3.789
1991 4.807
1992 4.369
1993 2.411
1994 2.628
1995 3.97
1996 5.255
1997 5.49
1998 4.358
1999 4.558
2000 5.789
2001 5.152
2002 6.287
2003 4.262
2004 3.482
2005 3.252
2006 3.752
2007 4.626
2008 5.018
2009 2.658
2010 2.552
2011 3.531
2012 5.39
2013 5.676