Year Total 1801 0.1043 1802 0.1043 1803 0.1043 1804 0.1043 1805 0.1043 1806 0.1043 1807 0.1043 1808 0.1043 1809 0.1043 1810 0.1043 1811 0.1043 1812 0.1043 1813 0.1043 1814 0.1043 1815 0.1043 1816 0.1043 1817 0.1043 1818 0.1043 1819 0.1043 1820 0.1043 1821 1.558 1822 1.558 1823 1.558 1824 1.558 1825 1.558 1826 1.558 1827 1.558 1828 1.558 1829 1.558 1830 1.558 1831 1.558 1832 1.558 1833 1.558 1834 1.558 1835 1.558 1836 1.558 1837 1.558 1838 1.558 1839 1.558 1840 1.558 1841 1.558 1842 1.558 1843 1.558 1844 1.558 1845 1.558 1846 1.558 1847 1.558 1848 1.558 1849 1.558 1850 1.558 1851 1.558 1852 1.558 1853 1.558 1854 1.558 1855 1.558 1856 1.558 1857 1.558 1858 1.558 1859 1.558 1860 1.558 1861 1.558 1862 1.558 1863 1.558 1864 1.558 1865 1.558 1866 1.558 1867 1.558 1868 1.558 1869 1.558 1870 1.558 1871 1.558 1872 1.558 1873 1.558 1874 1.558 1875 1.558 1876 1.558 1877 1.558 1878 1.558 1879 1.558 1880 1.558 1881 1.558 1882 1.558 1883 1.558 1884 1.558 1885 1.558 1886 -2.979 1887 18 1888 -2.92 1889 -6.161 1890 0.5035 1891 -7.561 1892 10.48 1893 14.37 1894 14.74 1895 -6.612 1896 11.15 1897 -0.7702 1898 3.603 1899 7.089 1900 -1.249 1901 3.437 1902 9.664 1903 -6.044 1904 11.6 1905 -10.67 1906 -3.547 1907 -3.027 1908 10.21 1909 4.777 1910 7.685 1911 -6.762 1912 9.039 1913 6.018 1914 -3.631 1915 3.864 1916 -10.28 1917 -11.39 1918 -38.22 1919 -12.99 1920 1.327 1921 -7.627 1922 17.15 1923 16.24 1924 27.85 1925 26.12 1926 13.31 1927 5.128 1928 6.126 1929 2.093 1930 5.475 1931 1.833 1932 -0.6385 1933 4.714 1934 10.18 1935 15.39 1936 7.783 1937 9.292 1938 0.6346 1939 5.006 1940 -3.284 1941 -0.9751 1942 -0.9751 1943 -0.9751 1944 -0.9751 1945 -0.9751 1946 -0.9751 1947 12.13 1948 14.02 1949 10.22 1950 9.312 1951 0.635 1952 7.886 1953 6.576 1954 7.633 1955 11.61 1956 12.75 1957 4.988 1958 10.5 1959 1.498 1960 12.19 1961 8.178 1962 4.998 1963 -0.253 1964 15.02 1965 7.376 1966 6.211 1967 5.47 1968 6.725 1969 2.149 1970 8.454 1971 3.324 1972 1.177 1973 9.049 1974 2.49 1975 -0.2393 1976 4.034 1977 1.635 1978 1.754 1979 -1.179 1980 -0.5262 1981 0.2827 1982 1.817 1983 2.545 1984 0.5814 1985 0.2696 1986 3.524 1987 0.7548 1988 1.501 1989 0.8691 1990 -3.58 1991 -11.66 1992 -5.986 1993 -9.463 1994 -12.09 1995 -7.572 1996 0.3061 1997 1.595 1998 -1.785 1999 2.563 2000 9.265 2001 12.9 2002 9.648 2003 9.501 2004 9.727 2005 10.56 2006 10.66 2007 8.795 2008 3.225 2009 1.052 2010 6.749 2011 6.578 2012 4.638 2013 5.522