Year Total 1801 0.0006 1802 0.0006 1803 0.0006 1804 0.0006 1805 0.0006 1806 0.0006 1807 0.0006 1808 0.0006 1809 0.0006 1810 0.0006 1811 0.0006 1812 0.0006 1813 0.0006 1814 0.0006 1815 0.0006 1816 0.0006 1817 0.0006 1818 0.0006 1819 0.0006 1820 0.0006 1821 1.453 1822 1.453 1823 1.453 1824 1.453 1825 1.453 1826 1.453 1827 1.453 1828 1.453 1829 1.453 1830 1.453 1831 1.453 1832 1.453 1833 1.453 1834 1.453 1835 1.453 1836 1.453 1837 1.453 1838 1.453 1839 1.453 1840 1.453 1841 1.453 1842 1.453 1843 1.453 1844 1.453 1845 1.453 1846 1.453 1847 1.453 1848 1.453 1849 1.453 1850 1.453 1851 1.453 1852 1.453 1853 1.453 1854 1.453 1855 1.453 1856 1.453 1857 1.453 1858 1.453 1859 1.453 1860 1.453 1861 1.453 1862 1.453 1863 1.453 1864 1.453 1865 1.453 1866 1.453 1867 1.453 1868 1.453 1869 1.453 1870 1.453 1871 1.453 1872 1.453 1873 1.453 1874 1.453 1875 1.453 1876 1.453 1877 1.453 1878 1.453 1879 1.453 1880 1.453 1881 1.453 1882 1.453 1883 1.453 1884 1.453 1885 1.453 1886 -3.079 1887 17.88 1888 -3.02 1889 -6.258 1890 0.3998 1891 -7.656 1892 10.37 1893 14.25 1894 14.62 1895 -6.709 1896 11.04 1897 -0.8726 1898 3.496 1899 6.978 1900 -1.351 1901 3.33 1902 9.551 1903 -6.141 1904 11.49 1905 -10.77 1906 -3.646 1907 -3.127 1908 10.1 1909 4.669 1910 7.574 1911 -6.858 1912 8.926 1913 5.909 1914 -3.73 1915 3.757 1916 -10.37 1917 -11.48 1918 -38.28 1919 -13.08 1920 1.223 1921 -7.722 1922 17.02 1923 16.12 1924 27.72 1925 25.99 1926 13.19 1927 5.019 1928 6.017 1929 1.987 1930 5.366 1931 1.728 1932 -0.7409 1933 4.606 1934 10.07 1935 15.27 1936 7.672 1937 9.179 1938 0.5308 1939 4.898 1940 -3.384 1941 -1.077 1942 -1.077 1943 -1.077 1944 -1.077 1945 -1.077 1946 -1.077 1947 12.01 1948 13.9 1949 10.11 1950 9.2 1951 0.3492 1952 6.777 1953 4.965 1954 5.707 1955 9.477 1956 10.56 1957 2.971 1958 8.425 1959 -0.3757 1960 10.15 1961 6.367 1962 3.32 1963 -1.708 1964 13.58 1965 6.305 1966 5.425 1967 4.923 1968 6.345 1969 1.873 1970 8.195 1971 3.097 1972 0.9813 1973 8.854 1974 3.282 1975 0.5258 1976 4.813 1977 2.376 1978 2.491 1979 -0.4456 1980 0.2446 1981 1.111 1982 2.701 1983 3.439 1984 1.408 1985 1.015 1986 4.181 1987 1.319 1988 2.102 1989 1.641 1990 -2.587 1991 -17.84 1992 -29.27 1993 -1.56 1994 -31.16 1995 -1.825 1996 -6.384 1997 0.8713 1998 -7.407 1999 -4.559 2000 0.6525 2001 4.36 2002 5.824 2003 4.244 2004 5.346 2005 5.573 2006 3.643 2007 2.045 2008 6.98 2009 -6.697 2010 6.317 2011 6.06 2012 -1.426 2013 8.123