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 0.8686
1822 0.8686
1823 0.8686
1824 0.8686
1825 0.8686
1826 0.8686
1827 0.8686
1828 0.8686
1829 0.8686
1830 0.8686
1831 0.8686
1832 0.8686
1833 0.8686
1834 0.8686
1835 0.8686
1836 0.8686
1837 0.8686
1838 0.8686
1839 0.8686
1840 0.8686
1841 0.8686
1842 0.8686
1843 0.8686
1844 0.8686
1845 0.8686
1846 0.8686
1847 0.8686
1848 0.8686
1849 0.8686
1850 0.8686
1851 0.8686
1852 0.8686
1853 0.8686
1854 0.8686
1855 0.8686
1856 0.8686
1857 0.8686
1858 0.8686
1859 0.8686
1860 0.8686
1861 0.8686
1862 0.8686
1863 0.8686
1864 0.8686
1865 0.8686
1866 0.8686
1867 0.8686
1868 0.8686
1869 0.8686
1870 0.8686
1871 2.286
1872 2.286
1873 2.286
1874 2.286
1875 2.286
1876 2.286
1877 2.286
1878 2.286
1879 2.286
1880 2.286
1881 2.286
1882 2.286
1883 2.286
1884 2.286
1885 2.286
1886 2.286
1887 2.286
1888 2.286
1889 2.286
1890 2.286
1891 2.286
1892 2.286
1893 2.286
1894 2.286
1895 2.286
1896 2.286
1897 2.286
1898 2.286
1899 2.286
1900 2.286
1901 2.286
1902 2.286
1903 2.286
1904 2.286
1905 2.286
1906 2.286
1907 2.286
1908 2.286
1909 2.286
1910 2.286
1911 2.286
1912 2.286
1913 2.286
1914 0.7588
1915 0.7588
1916 0.7588
1917 0.7588
1918 0.7588
1919 0.7588
1920 0.7588
1921 0.7588
1922 0.7588
1923 0.7588
1924 0.7588
1925 0.7588
1926 0.7588
1927 0.7588
1928 0.7588
1929 0.7588
1930 0.7588
1931 0.7588
1932 0.7588
1933 0.7588
1934 0.7588
1935 0.7588
1936 0.7588
1937 0.7588
1938 0.7588
1939 0.7588
1940 0.7588
1941 0.7588
1942 0.7588
1943 0.7588
1944 0.7588
1945 0.7588
1946 0.7588
1947 0.7588
1948 0.7588
1949 0.7588
1950 0.7588
1951 4.791
1952 4.659
1953 4.806
1954 4.983
1955 4.699
1956 4.076
1957 3.865
1958 3.596
1959 3.266
1960 3.427
1961 4.166
1962 11.8
1963 2.233
1964 4.082
1965 0.4024
1966 0.4463
1967 -12.89
1968 -1.968
1969 8.19
1970 1.764
1971 4.945
1972 8.758
1973 6.504
1974 -4.397
1975 -7.701
1976 15.9
1977 2.613
1978 -0.07319
1979 0.243
1980 -3.065
1981 3.318
1982 8.061
1983 5.529
1984 9
1985 5.993
1986 2.82
1987 3.544
1988 5.948
1989 4.212
1990 5.078
1991 5.934
1992 8.938
1993 8.268
1994 8.915
1995 9.543
1996 9.248
1997 7.986
1998 5.58
1999 4.605
2000 6.65
2001 6.809
2002 7.036
2003 7.258
2004 7.824
2005 8.439
2006 8.054
2007 8.372
2008 6.218
2009 5.223
2010 6.668
2011 5.754
2012 5.255
2013 5.406