Year Total 1801 0.5601 1802 0.5601 1803 0.5601 1804 0.5601 1805 0.5601 1806 0.5601 1807 0.5601 1808 0.5601 1809 0.5601 1810 0.5601 1811 0.5601 1812 0.5601 1813 0.5601 1814 0.5601 1815 0.5601 1816 0.5601 1817 0.5601 1818 0.5601 1819 0.5601 1820 0.5601 1821 0.2667 1822 0.2667 1823 0.2667 1824 0.2667 1825 0.2667 1826 0.2667 1827 0.2667 1828 0.2667 1829 0.2667 1830 0.2667 1831 0.2667 1832 0.2667 1833 0.2667 1834 0.2667 1835 0.2667 1836 0.2667 1837 0.2667 1838 0.2667 1839 0.2667 1840 0.2667 1841 0.2667 1842 0.2667 1843 0.2667 1844 0.2667 1845 0.2667 1846 0.2667 1847 0.2667 1848 0.2667 1849 0.2667 1850 0.2667 1851 0.6897 1852 0.6897 1853 0.6897 1854 0.6897 1855 0.6897 1856 0.6897 1857 0.6897 1858 0.6897 1859 0.6897 1860 0.6897 1861 0.6897 1862 0.6897 1863 0.6897 1864 0.6897 1865 0.6897 1866 0.6897 1867 0.6897 1868 0.6897 1869 0.6897 1870 0.6897 1871 3.288 1872 3.284 1873 3.28 1874 3.287 1875 3.283 1876 3.289 1877 3.284 1878 3.28 1879 3.285 1880 3.29 1881 3.275 1882 3.29 1883 3.284 1884 3.289 1885 3.283 1886 3.287 1887 3.281 1888 3.284 1889 3.287 1890 3.281 1891 3.813 1892 3.825 1893 3.811 1894 3.822 1895 4.062 1896 2.873 1897 6.784 1898 5.839 1899 -4.94 1900 0.7742 1901 8.674 1902 -7.22 1903 11.31 1904 1.764 1905 10.49 1906 -1.154 1907 5.919 1908 -0.1656 1909 2.958 1910 -0.1771 1911 -4.073 1912 -0.8987 1913 -6.093 1914 0.1059 1915 -1.526 1916 7.637 1917 4.211 1918 3.828 1919 3.918 1920 6.284 1921 -0.3917 1922 2.302 1923 3.424 1924 -1.701 1925 6.226 1926 6.029 1927 -4.532 1928 0.5659 1929 -3.987 1930 -6.245 1931 3.384 1932 -15.17 1933 11.57 1934 6.928 1935 7.626 1936 7.716 1937 3.337 1938 1.618 1939 5.443 1940 1.376 1941 9.93 1942 5.689 1943 3.727 1944 8.312 1945 4.756 1946 6.833 1947 3.615 1948 4.311 1949 5.71 1950 12.22 1951 7.469 1952 3.9 1953 0.2885 1954 10.47 1955 9.009 1956 7.332 1957 8.104 1958 5.751 1959 3.306 1960 8.556 1961 5.133 1962 4.824 1963 8.172 1964 11.89 1965 6.425 1966 6.788 1967 6.033 1968 7.923 1969 6.082 1970 6.755 1971 3.609 1972 8.191 1973 7.927 1974 5.802 1975 5.731 1976 4.425 1977 3.426 1978 9.178 1979 9.852 1980 9.274 1981 8.502 1982 -0.7897 1983 -3.817 1984 3.264 1985 2.097 1986 -3.185 1987 1.786 1988 1.377 1989 4.256 1990 5.317 1991 4.295 1992 3.575 1993 1.921 1994 4.47 1995 -6.4 1996 5.355 1997 7.087 1998 5.188 1999 4.07 2000 6.715 2001 0.1475 2002 1.093 2003 1.573 2004 4.423 2005 3.049 2006 5.052 2007 2.879 2008 0.8332 2009 -6.33 2010 5.026 2011 3.862 2012 3.905 2013 1.064