Year Total 1801 0.8896 1802 0.8896 1803 0.8897 1804 0.8896 1805 0.8896 1806 0.8897 1807 0.8896 1808 0.8897 1809 0.8896 1810 0.8897 1811 0.8896 1812 0.8896 1813 0.8896 1814 0.8897 1815 0.8896 1816 0.8896 1817 0.8896 1818 0.8896 1819 0.8897 1820 0.8896 1821 2.124 1822 2.124 1823 2.124 1824 2.124 1825 2.124 1826 2.124 1827 2.124 1828 2.124 1829 2.124 1830 2.124 1831 2.124 1832 2.124 1833 2.124 1834 2.124 1835 2.124 1836 2.124 1837 2.124 1838 2.124 1839 2.124 1840 2.124 1841 2.124 1842 2.124 1843 2.124 1844 2.124 1845 2.124 1846 2.124 1847 2.124 1848 2.124 1849 2.124 1850 2.124 1851 2.061 1852 2.061 1853 2.061 1854 2.061 1855 2.061 1856 2.061 1857 2.061 1858 2.061 1859 2.061 1860 2.061 1861 2.061 1862 2.061 1863 2.061 1864 2.061 1865 2.061 1866 2.061 1867 2.061 1868 2.061 1869 2.061 1870 2.061 1871 2.09 1872 2.09 1873 2.09 1874 2.09 1875 2.09 1876 2.09 1877 2.09 1878 2.09 1879 2.09 1880 2.09 1881 2.09 1882 2.09 1883 2.09 1884 2.09 1885 2.09 1886 2.09 1887 2.09 1888 2.09 1889 2.09 1890 2.09 1891 1.876 1892 1.876 1893 1.876 1894 1.876 1895 1.876 1896 1.876 1897 1.876 1898 1.876 1899 1.876 1900 1.876 1901 2.383 1902 2.383 1903 2.383 1904 2.383 1905 2.383 1906 2.383 1907 2.383 1908 2.383 1909 2.383 1910 2.383 1911 3.453 1912 3.453 1913 3.453 1914 -2.681 1915 -2.681 1916 -2.681 1917 -2.681 1918 -2.681 1919 -2.681 1920 -2.681 1921 -1.373 1922 -1.01 1923 -1.109 1924 -1.127 1925 -1.056 1926 -1.069 1927 0 1928 0 1929 -4.577 1930 7.194 1931 2.349 1932 -5.574 1933 4.745 1934 1.105 1935 2.186 1936 1.07 1937 -4.233 1938 11.05 1939 -3.187 1940 -3.159 1941 -4.91 1942 -3.713 1943 -4.103 1944 -3.467 1945 -4.211 1946 -3.856 1947 -4.841 1948 -3.842 1949 21.77 1950 22.02 1951 8.174 1952 7.752 1953 7.239 1954 7.303 1955 6.703 1956 4.066 1957 4.136 1958 4.211 1959 4.452 1960 4.271 1961 6.548 1962 3.476 1963 7.041 1964 6.397 1965 6.57 1966 11.96 1967 5.102 1968 1.21 1969 4.465 1970 2.265 1971 14.14 1972 6.477 1973 3.306 1974 5.547 1975 4.375 1976 5.122 1977 2.239 1978 3.387 1979 2.964 1980 0.4231 1981 -0.5868 1982 0.1094 1983 -0.7128 1984 4.181 1985 -0.01179 1986 1.891 1987 -1.922 1988 -0.08645 1989 -3.196 1990 -10.8 1991 -12.89 1992 -9.048 1993 1.061 1994 3.407 1995 6.709 1996 3.677 1997 -6.254 1998 -4.997 1999 -1.442 2000 1.813 2001 5.375 2002 4.687 2003 4.605 2004 8.224 2005 3.869 2006 7.714 2007 6.139 2008 7.248 2009 -6.663 2010 -1.21 2011 2.219 2012 0.685 2013 3.493