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 1.385 1822 1.385 1823 1.385 1824 1.385 1825 1.385 1826 1.385 1827 1.385 1828 1.385 1829 1.385 1830 1.385 1831 1.385 1832 1.385 1833 1.385 1834 1.385 1835 1.385 1836 1.385 1837 1.385 1838 1.385 1839 1.385 1840 1.385 1841 1.385 1842 1.385 1843 1.385 1844 1.385 1845 1.385 1846 1.385 1847 1.385 1848 1.385 1849 1.385 1850 1.385 1851 1.385 1852 1.385 1853 1.385 1854 1.385 1855 1.385 1856 1.385 1857 1.385 1858 1.385 1859 1.385 1860 1.385 1861 1.385 1862 1.385 1863 1.385 1864 1.385 1865 1.385 1866 1.385 1867 1.385 1868 1.385 1869 1.385 1870 1.385 1871 1.385 1872 1.385 1873 1.385 1874 1.385 1875 1.385 1876 1.385 1877 1.385 1878 1.385 1879 1.385 1880 1.385 1881 1.385 1882 1.385 1883 1.385 1884 1.385 1885 1.385 1886 -3.129 1887 17.82 1888 -3.07 1889 -6.306 1890 0.3484 1891 -7.703 1892 10.31 1893 14.19 1894 14.56 1895 -6.757 1896 10.98 1897 -0.9233 1898 3.443 1899 6.924 1900 -1.402 1901 3.277 1902 9.495 1903 -6.189 1904 11.43 1905 -10.81 1906 -3.695 1907 -3.176 1908 10.04 1909 4.616 1910 7.519 1911 -6.906 1912 8.87 1913 5.855 1914 -3.78 1915 3.704 1916 0.6653 1917 -21.15 1918 -21.15 1919 -21.15 1920 -3.429 1921 -3.429 1922 13.08 1923 13.08 1924 13.08 1925 13.08 1926 13.08 1927 13.08 1928 13.08 1929 1.935 1930 5.312 1931 1.676 1932 -0.7918 1933 4.553 1934 10.01 1935 15.21 1936 7.617 1937 9.123 1938 0.4793 1939 4.844 1940 -3.433 1941 -1.128 1942 -1.128 1943 -1.128 1944 -1.128 1945 -1.128 1946 -1.128 1947 11.96 1948 13.84 1949 10.05 1950 9.144 1951 0.2078 1952 6.296 1953 4.219 1954 4.739 1955 8.31 1956 9.28 1957 1.74 1958 7.152 1959 -1.473 1960 9.064 1961 5.513 1962 2.623 1963 -2.278 1964 12.98 1965 5.753 1966 7.536 1967 6.25 1968 4.456 1969 4.778 1970 12.05 1971 2.471 1972 2.837 1973 6.483 1974 8.808 1975 7.381 1976 6.098 1977 6.897 1978 7.429 1979 7.37 1980 4.576 1981 5.269 1982 2.006 1983 4.306 1984 5.425 1985 4.933 1986 -8.194 1987 1.253 1988 5.535 1989 -7.185 1990 -14.74 1991 -21.01 1992 -44.81 1993 -29.17 1994 -10.25 1995 2.716 1996 11.26 1997 10.52 1998 3.054 1999 2.785 2000 1.736 2001 4.674 2002 5.317 2003 10.91 2004 5.779 2005 9.624 2006 6.581 2007 11.83 2008 2.098 2009 -4.294 2010 4.518 2011 5.819 2012 4.911 2013 2.927