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 1.415
1822 1.416
1823 1.416
1824 1.416
1825 1.415
1826 1.417
1827 1.416
1828 1.416
1829 1.416
1830 1.416
1831 1.416
1832 1.417
1833 1.415
1834 1.416
1835 1.416
1836 1.416
1837 1.415
1838 1.416
1839 1.416
1840 1.415
1841 1.416
1842 1.416
1843 1.416
1844 1.415
1845 1.416
1846 1.416
1847 1.416
1848 1.416
1849 1.416
1850 1.416
1851 1.415
1852 1.416
1853 1.415
1854 1.416
1855 1.416
1856 1.415
1857 1.416
1858 1.416
1859 1.416
1860 1.415
1861 1.416
1862 1.416
1863 1.416
1864 1.416
1865 1.416
1866 1.416
1867 1.416
1868 1.416
1869 1.416
1870 1.416
1871 1.416
1872 1.415
1873 1.416
1874 1.416
1875 1.415
1876 1.416
1877 1.416
1878 1.416
1879 1.416
1880 1.416
1881 1.416
1882 1.416
1883 1.416
1884 1.416
1885 1.416
1886 1.415
1887 1.416
1888 1.416
1889 1.416
1890 1.415
1891 1.416
1892 1.415
1893 1.416
1894 1.415
1895 1.416
1896 1.416
1897 1.416
1898 1.416
1899 1.416
1900 1.415
1901 1.416
1902 1.416
1903 1.416
1904 1.416
1905 1.416
1906 1.415
1907 1.416
1908 1.415
1909 1.416
1910 1.416
1911 1.415
1912 1.416
1913 1.415
1914 2.251
1915 2.25
1916 2.251
1917 2.251
1918 2.25
1919 2.251
1920 2.251
1921 2.25
1922 2.251
1923 2.251
1924 2.251
1925 2.25
1926 2.25
1927 2.251
1928 2.25
1929 2.251
1930 2.25
1931 2.251
1932 2.25
1933 2.251
1934 2.25
1935 2.251
1936 2.25
1937 2.251
1938 2.251
1939 2.25
1940 2.251
1941 2.25
1942 2.251
1943 2.25
1944 2.251
1945 2.25
1946 2.25
1947 2.25
1948 2.25
1949 2.25
1950 2.251
1951 6.76
1952 7.419
1953 7.917
1954 8.267
1955 8.487
1956 8.6
1957 8.624
1958 8.58
1959 8.482
1960 8.344
1961 8.172
1962 7.972
1963 7.747
1964 7.501
1965 7.244
1966 6.977
1967 6.721
1968 6.495
1969 6.311
1970 6.16
1971 6.035
1972 5.918
1973 5.796
1974 0.3577
1975 0.2319
1976 0.09789
1977 0.0036
1978 0.02208
1979 0.1893
1980 0.4614
1981 0.7731
1982 1.048
1983 1.259
1984 1.37
1985 1.403
1986 1.433
1987 1.463
1988 1.432
1989 1.33
1990 1.183
1991 2.219
1992 2.06
1993 1.98
1994 2.013
1995 2.124
1996 2.258
1997 2.359
1998 2.409
1999 2.39
2000 2.318
2001 2.235
2002 4.678
2003 -1.729
2004 5.699
2005 5.593