Year Total 1801 0 1802 0 1803 0 1804 0 1805 0 1806 0 1807 0 1808 0 1809 0 1810 0 1811 0 1812 0 1813 0 1814 0 1815 0 1816 0 1817 0 1818 0 1819 0 1820 0 1821 1.17 1822 1.17 1823 1.17 1824 1.17 1825 1.17 1826 1.17 1827 1.17 1828 1.17 1829 1.17 1830 1.17 1831 1.17 1832 1.17 1833 1.17 1834 1.17 1835 1.17 1836 1.17 1837 1.17 1838 1.17 1839 1.17 1840 1.17 1841 1.17 1842 1.17 1843 1.17 1844 1.17 1845 1.17 1846 1.17 1847 1.17 1848 1.17 1849 1.17 1850 1.17 1851 0.7457 1852 0.7457 1853 0.7457 1854 0.7457 1855 0.7457 1856 0.7457 1857 0.7457 1858 0.7457 1859 0.7457 1860 0.7457 1861 0.7458 1862 0.7457 1863 0.7457 1864 0.7457 1865 0.7457 1866 0.7458 1867 0.7457 1868 0.7457 1869 0.7457 1870 0.7457 1871 1.663 1872 1.663 1873 1.663 1874 1.663 1875 1.663 1876 1.663 1877 1.663 1878 1.663 1879 1.663 1880 1.663 1881 1.663 1882 1.663 1883 1.663 1884 1.663 1885 1.663 1886 1.663 1887 1.663 1888 1.663 1889 1.663 1890 1.663 1891 1.767 1892 1.767 1893 1.767 1894 1.767 1895 1.767 1896 1.767 1897 1.767 1898 1.767 1899 1.767 1900 1.767 1901 1.791 1902 1.791 1903 1.791 1904 1.791 1905 1.791 1906 1.791 1907 1.791 1908 1.791 1909 1.791 1910 1.791 1911 2.092 1912 2.092 1913 2.092 1914 -0.7848 1915 -0.7847 1916 -0.7848 1917 -0.7848 1918 -0.7848 1919 -0.7847 1920 -0.7848 1921 8.228 1922 -3.427 1923 7.606 1924 9.8 1925 11.17 1926 -0.814 1927 7.236 1928 8.589 1929 2.563 1930 -3.481 1931 -3.652 1932 -4.244 1933 -4.427 1934 -3.921 1935 -0.9885 1936 8.225 1937 11.29 1938 0.9995 1939 0.9995 1940 0.9995 1941 0.9995 1942 0.9995 1943 0.9995 1944 0.9995 1945 0.9995 1946 0.9995 1947 0.9995 1948 0.9995 1949 5.92 1950 7.793 1951 2.353 1952 3.958 1953 0.3839 1954 5.006 1955 9.443 1956 6.736 1957 6.97 1958 8.525 1959 5.346 1960 8.484 1961 4.492 1962 2.084 1963 -1.354 1964 5.05 1965 3.982 1966 4.641 1967 4.673 1968 5.053 1969 2.826 1970 2.534 1971 3.807 1972 3.897 1973 3.608 1974 3.849 1975 3.172 1976 1.868 1977 4.876 1978 1.608 1979 1.236 1980 3.228 1981 -0.03089 1982 2.465 1983 1.977 1984 2.778 1985 1.185 1986 2.249 1987 0.8325 1988 2.544 1989 1.14 1990 -2.481 1991 -14.55 1992 -6.635 1993 1.848 1994 6.166 1995 5.83 1996 6.954 1997 5.783 1998 3.741 1999 0.3792 2000 0.7714 2001 3.266 2002 4.143 2003 4.19 2004 5.464 2005 6.111 2006 8.281 2007 10.63 2008 5.865 2009 -4.99 2010 4.339 2011 3.146 2012 1.742 2013 0.9744