Year Total 1801 0.1641 1802 0.1641 1803 0.1641 1804 0.1641 1805 0.1641 1806 0.1641 1807 0.1641 1808 0.1641 1809 0.1641 1810 0.1641 1811 0.1641 1812 0.1641 1813 0.1641 1814 0.1641 1815 0.1641 1816 0.1641 1817 0.1641 1818 0.1641 1819 0.1641 1820 0.1641 1821 0.8709 1822 0.8709 1823 0.8709 1824 0.8709 1825 0.8709 1826 0.8709 1827 0.8709 1828 0.8709 1829 0.8709 1830 0.8709 1831 0.8709 1832 0.8709 1833 0.8709 1834 0.8709 1835 0.8709 1836 0.8709 1837 0.8709 1838 0.8709 1839 0.8709 1840 0.8709 1841 0.8709 1842 0.8709 1843 0.8709 1844 0.8709 1845 0.8709 1846 0.8709 1847 0.8709 1848 0.8709 1849 0.8709 1850 0.8709 1851 0.8709 1852 0.8709 1853 0.8709 1854 0.8709 1855 0.8709 1856 0.8709 1857 0.8709 1858 0.8709 1859 0.8709 1860 0.8709 1861 0.8709 1862 0.8709 1863 0.8709 1864 0.8709 1865 0.8709 1866 0.8709 1867 0.8709 1868 0.8709 1869 0.8709 1870 0.8709 1871 0.8709 1872 0.8709 1873 0.8709 1874 0.8709 1875 0.8709 1876 0.8709 1877 0.8709 1878 0.8709 1879 0.8709 1880 0.8709 1881 0.8709 1882 0.8709 1883 0.8709 1884 0.8709 1885 0.8709 1886 0.8709 1887 0.8709 1888 0.8709 1889 0.8709 1890 0.8709 1891 0.8709 1892 0.8709 1893 0.8709 1894 0.8709 1895 0.8709 1896 0.8709 1897 0.8709 1898 0.8709 1899 0.8709 1900 0.8709 1901 0.8709 1902 0.8709 1903 0.8709 1904 0.8709 1905 0.8709 1906 0.8709 1907 0.8709 1908 0.8709 1909 0.8709 1910 0.8709 1911 0.8709 1912 0.8709 1913 0.8709 1914 2.254 1915 2.254 1916 2.254 1917 2.254 1918 2.254 1919 2.254 1920 2.254 1921 2.254 1922 2.102 1923 2.102 1924 2.102 1925 2.102 1926 2.102 1927 2.102 1928 2.102 1929 2.102 1930 2.102 1931 2.102 1932 5.534 1933 5.534 1934 5.534 1935 5.534 1936 5.534 1937 5.534 1938 5.534 1939 5.534 1940 5.534 1941 5.534 1942 5.534 1943 5.534 1944 5.534 1945 5.534 1946 5.534 1947 5.534 1948 5.534 1949 5.534 1950 5.534 1951 5.599 1952 6.263 1953 2.087 1954 7.261 1955 0.6915 1956 -2.447 1957 1.902 1958 5.852 1959 3.961 1960 23.32 1961 -4.909 1962 3.015 1963 7.879 1964 2.491 1965 -5.375 1966 -5.763 1967 -16.28 1968 0.03742 1969 17.01 1970 19.17 1971 14.24 1972 3.364 1973 5.393 1974 11.16 1975 -5.228 1976 9.042 1977 6.024 1978 -5.764 1979 6.759 1980 4.205 1981 -13.13 1982 -1.053 1983 -5.05 1984 -2.022 1985 8.323 1986 -8.754 1987 -10.75 1988 7.543 1989 6.467 1990 12.77 1991 -0.6179 1992 0.4337 1993 2.09 1994 0.9098 1995 -0.3075 1996 4.994 1997 2.802 1998 2.716 1999 0.4742 2000 5.318 2001 7.642 2002 21.35 2003 10.23 2004 10.48 2005 6.512 2006 6.031 2007 6.45 2008 6.27 2009 6.934 2010 7.84 2011 7.407 2012 6.386 2013 6.072