Year Total 1801 0.02265 1802 0.02265 1803 0.02265 1804 0.02265 1805 0.02265 1806 0.02265 1807 0.02265 1808 0.02265 1809 0.02265 1810 0.02265 1811 0.02265 1812 0.02265 1813 0.02265 1814 0.02265 1815 0.02265 1816 0.02265 1817 0.02265 1818 0.02265 1819 0.02265 1820 0.02265 1821 1.475 1822 1.474 1823 1.475 1824 1.475 1825 1.475 1826 1.475 1827 1.475 1828 1.475 1829 1.475 1830 1.475 1831 1.475 1832 1.475 1833 1.475 1834 1.475 1835 1.475 1836 1.475 1837 1.475 1838 1.475 1839 1.475 1840 1.475 1841 1.475 1842 1.475 1843 1.475 1844 1.475 1845 1.475 1846 1.475 1847 1.475 1848 1.475 1849 1.475 1850 1.475 1851 1.475 1852 1.475 1853 1.475 1854 1.475 1855 1.475 1856 1.475 1857 1.475 1858 1.475 1859 1.475 1860 1.475 1861 1.475 1862 1.475 1863 1.475 1864 1.475 1865 1.475 1866 1.475 1867 1.475 1868 1.475 1869 1.475 1870 1.475 1871 1.475 1872 1.475 1873 1.475 1874 1.475 1875 1.475 1876 1.475 1877 1.475 1878 1.475 1879 1.475 1880 1.475 1881 1.475 1882 1.475 1883 1.475 1884 1.475 1885 1.475 1886 -3.058 1887 17.91 1888 -2.999 1889 -6.238 1890 0.4212 1891 -7.636 1892 10.39 1893 14.27 1894 14.65 1895 -6.689 1896 11.06 1897 -0.8515 1898 3.518 1899 7.001 1900 -1.33 1901 3.352 1902 9.575 1903 -6.121 1904 11.51 1905 -10.75 1906 -3.626 1907 -3.106 1908 10.12 1909 4.692 1910 7.597 1911 -6.838 1912 8.949 1913 5.932 1914 -3.71 1915 3.779 1916 -10.35 1917 -11.46 1918 -38.27 1919 -13.07 1920 1.244 1921 -7.702 1922 17.05 1923 16.14 1924 27.75 1925 26.01 1926 13.22 1927 5.042 1928 6.039 1929 2.009 1930 5.388 1931 1.75 1932 -0.7198 1933 4.629 1934 10.09 1935 15.29 1936 7.695 1937 9.202 1938 0.5522 1939 4.92 1940 -3.363 1941 -1.056 1942 -1.056 1943 -1.056 1944 -1.056 1945 -1.056 1946 -1.056 1947 12.04 1948 13.92 1949 10.13 1950 9.223 1951 1.6 1952 7.849 1953 5.738 1954 6.226 1955 9.805 1956 10.78 1957 3.182 1958 8.792 1959 0.2174 1960 11.19 1961 7.748 1962 4.997 1963 0.07673 1964 15.68 1965 8.19 1966 7.201 1967 6.644 1968 8.079 1969 3.573 1970 10.07 1971 4.944 1972 2.829 1973 10.87 1974 2.418 1975 -0.3073 1976 3.964 1977 1.572 1978 1.698 1979 -1.224 1980 -0.5617 1981 0.2465 1982 1.783 1983 2.542 1984 0.6396 1985 0.4057 1986 3.739 1987 1.02 1988 1.819 1989 1.244 1990 -3.152 1991 -9.039 1992 -32.52 1993 -16.18 1994 -21.35 1995 -12.53 1996 -16.88 1997 1.357 1998 4.78 1999 2.968 2000 7.271 2001 8.934 2002 8.12 2003 8.759 2004 9.2 2005 5.446 2006 5.985 2007 6.817 2008 6.982 2009 3.147 2010 6.767 2011 6.361 2012 6.824 2013 6.751