Year Total 1801 0.5906 1802 0.5906 1803 0.5906 1804 0.5906 1805 0.5906 1806 0.5906 1807 0.5906 1808 0.5906 1809 0.5906 1810 0.5906 1811 0.5906 1812 0.5906 1813 0.5906 1814 0.5906 1815 0.5906 1816 0.5906 1817 0.5906 1818 0.5906 1819 0.5906 1820 0.5906 1821 1.654 1822 1.549 1823 1.647 1824 1.594 1825 1.591 1826 1.637 1827 1.585 1828 1.631 1829 1.579 1830 1.624 1831 1.621 1832 1.57 1833 1.615 1834 1.611 1835 1.608 1836 1.605 1837 1.602 1838 1.599 1839 1.642 1840 1.593 1841 1.726 1842 1.767 1843 1.717 1844 1.757 1845 1.752 1846 1.747 1847 1.742 1848 1.737 1849 1.776 1850 1.728 1851 2.598 1852 6.331 1853 -3.469 1854 -11.13 1855 16.87 1856 -0.1033 1857 8.555 1858 26.14 1859 -4.964 1860 -13.03 1861 7.125 1862 7.632 1863 -0.03961 1864 -5.33 1865 8.476 1866 -0.9261 1867 -12.09 1868 18.14 1869 9.432 1870 -4.369 1871 6.863 1872 -4.695 1873 2.815 1874 12.08 1875 11.07 1876 -2.282 1877 -9.748 1878 1.855 1879 -0.2754 1880 6.721 1881 1.769 1882 -2.939 1883 0.2475 1884 11.31 1885 7.853 1886 3.931 1887 -0.4539 1888 2.373 1889 0.1028 1890 7.107 1891 -5.677 1892 8.706 1893 4.02 1894 -2.307 1895 11.02 1896 2.587 1897 5.152 1898 1.801 1899 4.913 1900 1.087 1901 -1.091 1902 2.318 1903 -1.93 1904 5.329 1905 2.42 1906 10.55 1907 0.9217 1908 -1.568 1909 5.211 1910 3.381 1911 2.182 1912 1.034 1913 -1.305 1914 0.08182 1915 0.981 1916 -0.3148 1917 -10.94 1918 -0.3546 1919 6.579 1920 6.487 1921 -2.482 1922 9.683 1923 5.788 1924 3.729 1925 7.305 1926 5.008 1927 5.365 1928 5.587 1929 3.483 1930 -0.6472 1931 -4.169 1932 -3.399 1933 4.996 1934 0.2011 1935 -0.4013 1936 0.3358 1937 4.752 1938 3.834 1939 -0.1231 1940 1.047 1941 -0.6707 1942 -2.517 1943 -0.8816 1944 2.414 1945 28.72 1946 6.843 1947 12.04 1948 2.013 1949 -2.723 1950 4.134 1951 8.177 1952 0.7608 1953 3.527 1954 5.852 1955 6.881 1956 6.448 1957 3.475 1958 -2.339 1959 6.499 1960 6.607 1961 7.085 1962 4.017 1963 4.822 1964 5.553 1965 3.997 1966 3.057 1967 3.21 1968 3.526 1969 5.279 1970 6.386 1971 3.696 1972 3.06 1973 3.09 1974 1.632 1975 -6.241 1976 -0.3264 1977 2.481 1978 -0.1577 1979 1.954 1980 3.989 1981 1.138 1982 -1.692 1983 0.5556 1984 3.21 1985 3.513 1986 1.611 1987 0.6077 1988 2.909 1989 4.159 1990 3.502 1991 -1.058 1992 0.05132 1993 -0.00561 1994 1.284 1995 0.6059 1996 0.7902 1997 2.152 1998 3.139 1999 1.276 2000 3.561 2001 1.093 2002 0.3944 2003 -0.1513 2004 2.748 2005 2.626 2006 3.882 2007 3.89 2008 1.727 2009 -3.749 2010 2.497 2011 1.342 2012 0.385 2013 1.724