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 0.8258
1822 0.8258
1823 0.8257
1824 0.8258
1825 0.8258
1826 0.8257
1827 0.8258
1828 0.8257
1829 0.8258
1830 0.8258
1831 0.8258
1832 0.8258
1833 0.8257
1834 0.8258
1835 0.8257
1836 0.8258
1837 0.8258
1838 0.8258
1839 0.8257
1840 0.8258
1841 0.8258
1842 0.8258
1843 0.8257
1844 0.8258
1845 0.8258
1846 0.8258
1847 0.8258
1848 0.8258
1849 0.8258
1850 0.8258
1851 0.8257
1852 0.8258
1853 0.8257
1854 0.8258
1855 0.8258
1856 0.8257
1857 0.8258
1858 0.8257
1859 0.8258
1860 0.8258
1861 0.8257
1862 0.8258
1863 0.8258
1864 0.8258
1865 0.8258
1866 0.8258
1867 0.8258
1868 0.8258
1869 0.8258
1870 0.8258
1871 1.049
1872 1.049
1873 1.049
1874 1.049
1875 1.049
1876 1.049
1877 1.049
1878 1.049
1879 1.049
1880 1.049
1881 1.049
1882 1.049
1883 1.049
1884 1.049
1885 1.049
1886 1.049
1887 1.049
1888 1.049
1889 1.049
1890 1.049
1891 1.049
1892 1.049
1893 1.049
1894 1.049
1895 1.049
1896 1.049
1897 1.049
1898 1.049
1899 1.049
1900 1.049
1901 1.049
1902 1.049
1903 1.049
1904 1.049
1905 1.049
1906 1.049
1907 1.049
1908 1.049
1909 1.049
1910 1.049
1911 1.049
1912 1.049
1913 1.049
1914 1.424
1915 1.424
1916 1.424
1917 1.424
1918 1.424
1919 1.424
1920 1.424
1921 1.424
1922 1.424
1923 1.424
1924 1.424
1925 1.424
1926 1.424
1927 1.424
1928 1.424
1929 1.424
1930 1.424
1931 1.424
1932 1.424
1933 1.424
1934 1.424
1935 1.424
1936 1.424
1937 1.424
1938 1.424
1939 1.424
1940 1.424
1941 1.424
1942 1.424
1943 1.424
1944 1.424
1945 1.424
1946 1.424
1947 1.424
1948 1.424
1949 1.424
1950 1.424
1951 2.803
1952 3.256
1953 5.971
1954 1.97
1955 1.833
1956 4.32
1957 -0.1819
1958 5.416
1959 2.652
1960 3.374
1961 0.6454
1962 1.487
1963 1.599
1964 1.7
1965 2.003
1966 0.7448
1967 2.476
1968 3.302
1969 1.428
1970 1.939
1971 -4.763
1972 -1.859
1973 11.36
1974 5.203
1975 4.71
1976 4.313
1977 -7.685
1978 6.537
1979 -1.697
1980 -0.2804
1981 9.092
1982 6.621
1983 0.7665
1984 -4.55
1985 -5.575
1986 5.02
1987 -18.58
1988 -9.863
1989 -0.3405
1990 -0.8846
1991 7.345
1992 1.22
1993 -5.14
1994 -2.571
1995 28.28
1996 7.308
1997 5.875
1998 5.013
1999 4.952
2000 1.744
2001 -7.154
2002 27.1
2003 12.59
2004 6.546
2005 12.36
2006 4.558
2007 13.61
2008 2.502
2009 20.17
2010 8.043
2011 6.977
2012 14.79
2013 4.469