Year Total 1801 0.4253 1802 0.4253 1803 0.4253 1804 0.4253 1805 0.4253 1806 0.4253 1807 0.4253 1808 0.4253 1809 0.4253 1810 0.4253 1811 0.4253 1812 0.4253 1813 0.4253 1814 0.4253 1815 0.4253 1816 0.4253 1817 0.4253 1818 0.4253 1819 0.4253 1820 0.4253 1821 1.156 1822 1.156 1823 1.155 1824 1.155 1825 1.156 1826 1.155 1827 1.156 1828 1.155 1829 1.156 1830 1.156 1831 1.155 1832 1.155 1833 1.156 1834 1.155 1835 1.155 1836 1.156 1837 1.155 1838 1.156 1839 1.155 1840 1.155 1841 1.156 1842 1.155 1843 1.156 1844 1.155 1845 1.156 1846 1.155 1847 1.156 1848 1.156 1849 1.155 1850 1.156 1851 1.155 1852 1.156 1853 1.156 1854 1.155 1855 1.155 1856 1.156 1857 1.155 1858 1.155 1859 1.156 1860 1.155 1861 1.156 1862 1.156 1863 1.155 1864 1.156 1865 1.155 1866 1.156 1867 1.155 1868 1.156 1869 1.156 1870 1.155 1871 1.156 1872 1.156 1873 1.156 1874 1.155 1875 1.156 1876 1.155 1877 1.155 1878 1.156 1879 1.155 1880 1.156 1881 1.155 1882 1.156 1883 1.156 1884 1.155 1885 1.155 1886 1.156 1887 1.155 1888 1.155 1889 1.156 1890 1.156 1891 1.155 1892 1.156 1893 1.155 1894 1.156 1895 1.155 1896 1.156 1897 1.155 1898 1.155 1899 1.156 1900 1.156 1901 1.155 1902 1.156 1903 1.155 1904 1.155 1905 1.156 1906 1.156 1907 1.155 1908 1.156 1909 1.155 1910 1.156 1911 1.156 1912 1.156 1913 1.155 1914 3.707 1915 3.707 1916 3.707 1917 3.707 1918 3.707 1919 3.707 1920 3.707 1921 3.707 1922 3.707 1923 3.707 1924 3.707 1925 3.707 1926 3.707 1927 3.707 1928 3.707 1929 3.707 1930 3.707 1931 3.707 1932 3.707 1933 3.707 1934 3.707 1935 3.707 1936 3.707 1937 3.707 1938 3.707 1939 3.707 1940 3.707 1941 4.035 1942 4.035 1943 4.035 1944 4.035 1945 4.035 1946 4.035 1947 4.035 1948 4.035 1949 4.035 1950 4.035 1951 4.088 1952 4.189 1953 4.134 1954 -2.315 1955 8.382 1956 -1.593 1957 9.789 1958 5.455 1959 0.5278 1960 4.095 1961 13.46 1962 -2.591 1963 5.289 1964 11.34 1965 7.576 1966 5.817 1967 5.798 1968 -1.536 1969 2.958 1970 6.503 1971 6.006 1972 0.1686 1973 8.114 1974 3.145 1975 -5.042 1976 -5.246 1977 0.7383 1978 -5.296 1979 0.3166 1980 2.732 1981 -4.4 1982 0 1983 4.2 1984 6 1985 3.5 1986 3.176 1987 7 1988 5.573 1989 0.3875 1990 -0.4446 1991 0.9914 1992 -5.838 1993 -23.98 1994 1.339 1995 15 1996 20 1997 5.5 1998 0 1999 3.24 2000 3.012 2001 3.14 2002 14.53 2003 3.3 2004 11.2 2005 20.5 2006 18.6 2007 23.19 2008 13.82 2009 2.39 2010 3.45 2011 3.873 2012 4.957 2013 3.794