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 1.172 1822 1.172 1823 1.172 1824 1.172 1825 1.172 1826 1.172 1827 1.172 1828 1.172 1829 1.172 1830 1.172 1831 1.172 1832 1.172 1833 1.172 1834 1.172 1835 1.172 1836 1.172 1837 1.172 1838 1.172 1839 1.172 1840 1.172 1841 1.172 1842 1.172 1843 1.172 1844 1.172 1845 1.172 1846 1.172 1847 1.172 1848 1.172 1849 1.172 1850 1.172 1851 0.7475 1852 0.7475 1853 0.7475 1854 0.7475 1855 0.7475 1856 0.7475 1857 0.7475 1858 0.7475 1859 0.7475 1860 0.7475 1861 0.7475 1862 0.7475 1863 0.7475 1864 0.7475 1865 0.7475 1866 0.7475 1867 0.7475 1868 0.7475 1869 0.7475 1870 0.7475 1871 1.665 1872 1.664 1873 1.664 1874 1.664 1875 1.665 1876 1.664 1877 1.665 1878 1.664 1879 1.665 1880 1.664 1881 1.664 1882 1.665 1883 1.664 1884 1.665 1885 1.664 1886 1.665 1887 1.664 1888 1.665 1889 1.664 1890 1.664 1891 1.769 1892 1.769 1893 1.769 1894 1.769 1895 1.769 1896 1.769 1897 1.769 1898 1.769 1899 1.769 1900 1.769 1901 1.792 1902 1.792 1903 1.792 1904 1.792 1905 1.792 1906 1.792 1907 1.792 1908 1.792 1909 1.792 1910 1.792 1911 2.094 1912 2.094 1913 2.094 1914 -0.783 1915 -0.783 1916 -0.783 1917 -0.783 1918 -0.783 1919 -0.783 1920 -0.783 1921 8.23 1922 -3.425 1923 7.608 1924 9.802 1925 11.17 1926 -0.8123 1927 7.238 1928 8.591 1929 2.565 1930 -3.479 1931 -3.65 1932 -4.243 1933 -4.425 1934 -3.919 1935 -0.9868 1936 8.227 1937 11.29 1938 1.001 1939 1.001 1940 1.001 1941 1.001 1942 1.001 1943 1.001 1944 1.001 1945 1.001 1946 1.001 1947 1.001 1948 1.001 1949 5.922 1950 7.795 1951 1.577 1952 3.001 1953 -0.6511 1954 3.851 1955 8.2 1956 5.515 1957 5.759 1958 7.325 1959 4.22 1960 7.374 1961 3.477 1962 1.152 1963 -2.191 1964 4.234 1965 3.25 1966 3.984 1967 4.089 1968 4.519 1969 2.324 1970 2.035 1971 3.294 1972 3.38 1973 3.092 1974 3.341 1975 2.682 1976 1.403 1977 4.41 1978 1.148 1979 0.7442 1980 2.674 1981 -0.6265 1982 1.805 1983 1.296 1984 2.105 1985 0.5641 1986 1.67 1987 0.3054 1988 2.05 1989 0.6865 1990 -2.89 1991 -11.6 1992 -0.4897 1993 0.08828 1994 2.236 1995 5.963 1996 4.061 1997 -0.685 1998 -0.7207 1999 1.357 2000 3.638 2001 2.4 2002 1.811 2003 3.542 2004 4.539 2005 6.598 2006 7.1 2007 5.926 2008 2.798 2009 -4.726 2010 2.63 2011 2.068 2012 -0.9031 2013 -0.747