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 1.404
1822 1.403
1823 1.404
1824 1.404
1825 1.404
1826 1.404
1827 1.404
1828 1.403
1829 1.404
1830 1.403
1831 1.405
1832 1.404
1833 1.404
1834 1.403
1835 1.404
1836 1.403
1837 1.403
1838 1.405
1839 1.404
1840 1.404
1841 1.403
1842 1.404
1843 1.403
1844 1.404
1845 1.404
1846 1.404
1847 1.403
1848 1.404
1849 1.404
1850 1.404
1851 1.404
1852 1.403
1853 1.404
1854 1.404
1855 1.404
1856 1.403
1857 1.404
1858 1.404
1859 1.404
1860 1.404
1861 1.404
1862 1.403
1863 1.404
1864 1.403
1865 1.404
1866 1.403
1867 1.404
1868 1.404
1869 1.404
1870 1.403
1871 1.404
1872 1.404
1873 1.403
1874 1.404
1875 1.404
1876 1.404
1877 1.403
1878 1.404
1879 1.404
1880 1.404
1881 1.404
1882 1.404
1883 1.404
1884 1.404
1885 1.404
1886 1.404
1887 1.404
1888 1.404
1889 1.403
1890 1.404
1891 1.404
1892 1.403
1893 1.404
1894 1.404
1895 1.403
1896 1.404
1897 1.404
1898 1.404
1899 1.403
1900 1.404
1901 1.404
1902 1.404
1903 1.404
1904 1.404
1905 1.404
1906 1.404
1907 1.404
1908 1.403
1909 1.404
1910 1.403
1911 1.404
1912 1.404
1913 1.404
1914 2.239
1915 2.238
1916 2.239
1917 2.238
1918 2.238
1919 2.238
1920 2.238
1921 2.238
1922 2.238
1923 2.239
1924 2.238
1925 2.238
1926 2.239
1927 2.238
1928 2.238
1929 2.239
1930 2.238
1931 2.238
1932 2.238
1933 2.238
1934 2.238
1935 2.238
1936 2.239
1937 2.238
1938 2.239
1939 2.238
1940 2.239
1941 2.238
1942 2.238
1943 2.239
1944 2.238
1945 2.238
1946 2.239
1947 2.238
1948 2.238
1949 2.238
1950 2.239
1951 3.589
1952 4.109
1953 4.59
1954 4.997
1955 5.301
1956 5.477
1957 5.513
1958 5.402
1959 5.155
1960 4.804
1961 4.406
1962 4.033
1963 3.76
1964 3.626
1965 3.585
1966 3.562
1967 3.5
1968 3.406
1969 3.264
1970 3.09
1971 2.946
1972 2.825
1973 2.662
1974 -0.2611
1975 -0.4937
1976 -0.765
1977 -0.97
1978 -0.9625
1979 -0.6668
1980 -0.1667
1981 0.404
1982 0.8894
1983 1.228
1984 1.355
1985 1.326
1986 1.279
1987 1.249
1988 1.151
1989 0.9853
1990 0.7794
1991 7.275
1992 7.043
1993 6.91
1994 6.913
1995 7.01
1996 7.134
1997 7.222
1998 7.264
1999 7.235
2000 7.157
2001 7.071
2002 5.269
2003 -1.713
2004 9.773
2005 5.815