Year Total 1801 0.0236 1802 0.0236 1803 0.0236 1804 0.0236 1805 0.0236 1806 0.0236 1807 0.0236 1808 0.0236 1809 0.0236 1810 0.0236 1811 0.0236 1812 0.0236 1813 0.0236 1814 0.0236 1815 0.0236 1816 0.0236 1817 0.0236 1818 0.0236 1819 0.0236 1820 0.0236 1821 0.5822 1822 0.5822 1823 0.5822 1824 0.5822 1825 0.5822 1826 0.5822 1827 0.5822 1828 0.5822 1829 0.5822 1830 0.5822 1831 0.5822 1832 0.5822 1833 0.5822 1834 0.5822 1835 0.5822 1836 0.5822 1837 0.5822 1838 0.5822 1839 0.5822 1840 0.5822 1841 0.5822 1842 0.5822 1843 0.5822 1844 0.5822 1845 0.5822 1846 0.5822 1847 0.5822 1848 0.5822 1849 0.5822 1850 0.5822 1851 0.5822 1852 0.5822 1853 0.5822 1854 0.5822 1855 0.5822 1856 0.5822 1857 0.5822 1858 0.5822 1859 0.5822 1860 0.5822 1861 0.5822 1862 0.5822 1863 0.5822 1864 0.5822 1865 0.5822 1866 0.5822 1867 0.5822 1868 0.5822 1869 0.5822 1870 0.5822 1871 1.143 1872 1.143 1873 1.142 1874 1.144 1875 1.143 1876 1.143 1877 1.142 1878 1.144 1879 1.143 1880 1.142 1881 1.144 1882 1.143 1883 1.142 1884 1.144 1885 1.143 1886 1.142 1887 1.144 1888 1.143 1889 1.142 1890 1.143 1891 1.143 1892 1.142 1893 1.143 1894 1.144 1895 1.141 1896 1.145 1897 1.142 1898 1.143 1899 1.144 1900 1.143 1901 1.142 1902 1.143 1903 1.144 1904 1.143 1905 1.142 1906 1.143 1907 1.142 1908 1.143 1909 1.144 1910 1.143 1911 1.142 1912 1.143 1913 1.144 1914 3.689 1915 3.689 1916 3.69 1917 3.689 1918 3.689 1919 3.69 1920 3.688 1921 3.69 1922 3.689 1923 3.689 1924 3.689 1925 3.689 1926 3.689 1927 3.689 1928 3.689 1929 3.689 1930 3.689 1931 3.689 1932 3.69 1933 3.688 1934 3.689 1935 3.69 1936 3.688 1937 3.689 1938 3.69 1939 3.689 1940 3.689 1941 3.689 1942 3.689 1943 3.689 1944 3.69 1945 3.689 1946 3.689 1947 3.69 1948 3.688 1949 3.69 1950 3.689 1951 0.2019 1952 5.381 1953 7.55 1954 7.5 1955 6.327 1956 4.959 1957 4.102 1958 4.306 1959 11.87 1960 14.91 1961 18.31 1962 20.75 1963 21.28 1964 19.99 1965 18.18 1966 16.39 1967 15.82 1968 17.28 1969 20.84 1970 24.99 1971 13.83 1972 13.68 1973 81.68 1974 189.7 1975 32.25 1976 15.12 1977 17.62 1978 -2.296 1979 24.57 1980 25.68 1981 1.89 1982 -9.298 1983 -6.112 1984 3.407 1985 -2.823 1986 -19 1987 6.528 1988 -2.016 1989 13.97 1990 18.08 1991 0.3894 1992 2.9 1993 -0.853 1994 7.818 1995 6.388 1996 5.143 1997 8.097 1998 0.8892 1999 3.58 2000 11.24 2001 1.864 2002 0.8245 2003 11.47 2004 12.95 2005 15.76 2006 21.09 2007 16.4 2008 13.9 2009 0.107 2010 6.469 2011 7.283 2012 4.085 2013 2.986