Year Total 1801 0.1039 1802 0.1039 1803 0.1039 1804 0.1039 1805 0.1039 1806 0.1039 1807 0.1039 1808 0.1039 1809 0.1039 1810 0.1039 1811 0.1039 1812 0.1039 1813 0.1039 1814 0.1039 1815 0.1039 1816 0.1039 1817 0.1039 1818 0.1039 1819 0.1039 1820 0.1039 1821 0.8127 1822 0.812 1823 0.8127 1824 0.8126 1825 0.8125 1826 0.8123 1827 0.8127 1828 0.8124 1829 0.8127 1830 0.8122 1831 0.8124 1832 0.8125 1833 0.8125 1834 0.8125 1835 0.8124 1836 0.8129 1837 0.8126 1838 0.8123 1839 0.812 1840 0.8129 1841 0.8124 1842 0.8125 1843 0.8125 1844 0.8124 1845 0.8123 1846 0.8128 1847 0.8125 1848 0.8122 1849 0.8125 1850 0.8126 1851 0.8121 1852 0.8128 1853 0.8127 1854 0.812 1855 0.8124 1856 0.8128 1857 0.8125 1858 0.8127 1859 0.8122 1860 0.8128 1861 0.8123 1862 0.8122 1863 0.8126 1864 0.8124 1865 0.8126 1866 0.8128 1867 0.8124 1868 0.8124 1869 0.8124 1870 0.8123 1871 2.625 1872 2.625 1873 2.625 1874 2.625 1875 2.625 1876 2.625 1877 2.625 1878 2.625 1879 2.625 1880 2.625 1881 2.625 1882 2.625 1883 2.625 1884 2.625 1885 2.625 1886 2.625 1887 2.625 1888 2.625 1889 2.625 1890 2.625 1891 1.571 1892 1.57 1893 1.571 1894 1.571 1895 1.571 1896 1.571 1897 1.571 1898 1.571 1899 1.57 1900 1.571 1901 2.498 1902 2.498 1903 2.498 1904 2.498 1905 2.498 1906 2.498 1907 2.498 1908 2.498 1909 2.498 1910 2.498 1911 0.8872 1912 0.8868 1913 0.8871 1914 0.5317 1915 0.5319 1916 0.5316 1917 0.5316 1918 0.5319 1919 0.5317 1920 0.5319 1921 1.881 1922 2.371 1923 4.637 1924 6.602 1925 4.348 1926 6.403 1927 -2.157 1928 8.213 1929 4.719 1930 -2.495 1931 -3.528 1932 -9.759 1933 2.596 1934 3.207 1935 -1.996 1936 12.43 1937 1.155 1938 7.461 1939 5.002 1940 -0.00098 1941 -0.00109 1942 -0.00099 1943 -0.00097 1944 -0.00101 1945 -0.00086 1946 -0.00104 1947 -0.00102 1948 18.76 1949 9.35 1950 -6.771 1951 3.413 1952 -7.742 1953 15.3 1954 6.076 1955 6.87 1956 -1.403 1957 17.59 1958 4.956 1959 13.11 1960 7.191 1961 5.396 1962 2.793 1963 11.32 1964 10.23 1965 2.9 1966 5.179 1967 1.268 1968 1.516 1969 10.68 1970 4.61 1971 11.51 1972 3.63 1973 3.743 1974 13.33 1975 0.3446 1976 3.358 1977 7.549 1978 5.727 1979 6.847 1980 4.757 1981 1.34 1982 -0.04476 1983 0.05586 1984 1.89 1985 0.5491 1986 4.263 1987 -0.6123 1988 -0.6355 1989 -0.3791 1990 -6.394 1991 -10.36 1992 -23.21 1993 -36.48 1994 1.073 1995 13.13 1996 25.37 1997 4.132 1998 2.143 1999 -9.919 2000 2.371 2001 1.667 2002 3.607 2003 4.928 2004 6.903 2005 6.181 2006 8.49 2007 8.466 2008 6.84 2009 -5.91 2010 2.174 2011 7.566 2012 -2.652 2013 3.214