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 0.8035 1822 0.8037 1823 0.8039 1824 0.8036 1825 0.8037 1826 0.8039 1827 0.8036 1828 0.8037 1829 0.8038 1830 0.8039 1831 0.8036 1832 0.8037 1833 0.8038 1834 0.8035 1835 0.8035 1836 0.8041 1837 0.8037 1838 0.8037 1839 0.8034 1840 0.8039 1841 0.8035 1842 0.8039 1843 0.8035 1844 0.804 1845 0.8036 1846 0.8036 1847 0.804 1848 0.8036 1849 0.8036 1850 0.8039 1851 0.8035 1852 0.8039 1853 0.8034 1854 0.8038 1855 0.8037 1856 0.8037 1857 0.8036 1858 0.8039 1859 0.8035 1860 0.8038 1861 0.8037 1862 0.8036 1863 0.8039 1864 0.8038 1865 0.8036 1866 0.8039 1867 0.8034 1868 0.804 1869 0.8035 1870 0.8037 1871 1.405 1872 1.405 1873 1.405 1874 1.405 1875 1.405 1876 1.405 1877 1.405 1878 1.405 1879 1.405 1880 1.405 1881 1.405 1882 1.405 1883 1.405 1884 1.405 1885 1.405 1886 1.405 1887 1.405 1888 1.405 1889 1.405 1890 1.405 1891 1.405 1892 1.405 1893 1.405 1894 1.405 1895 1.405 1896 1.405 1897 1.405 1898 1.405 1899 1.405 1900 1.405 1901 1.405 1902 1.405 1903 1.405 1904 1.405 1905 1.405 1906 1.405 1907 1.405 1908 1.405 1909 1.405 1910 1.405 1911 1.405 1912 1.405 1913 1.405 1914 2.084 1915 2.084 1916 2.084 1917 2.084 1918 2.084 1919 2.084 1920 2.084 1921 2.084 1922 2.084 1923 2.084 1924 2.084 1925 2.084 1926 2.084 1927 2.084 1928 2.084 1929 2.084 1930 2.084 1931 2.084 1932 2.084 1933 2.084 1934 2.084 1935 2.084 1936 2.084 1937 2.084 1938 2.084 1939 2.084 1940 2.084 1941 2.084 1942 2.084 1943 2.084 1944 2.084 1945 2.084 1946 2.084 1947 2.084 1948 2.084 1949 2.084 1950 2.084 1951 14.41 1952 9.817 1953 8.042 1954 7.685 1955 -3.329 1956 40.7 1957 5.484 1958 13.03 1959 9.709 1960 7.453 1961 20.37 1962 1.262 1963 5.117 1964 18.16 1965 13.82 1966 6.555 1967 6.287 1968 -4.776 1969 11.95 1970 -7.996 1971 3.837 1972 3.679 1973 4.881 1974 8.096 1975 6.026 1976 23.15 1977 5.444 1978 19.92 1979 8.441 1980 18.02 1981 4.199 1982 7.294 1983 2.292 1984 9.03 1985 3.802 1986 9.222 1987 2.849 1988 -0.7121 1989 -10.01 1990 -3.174 1991 -3.139 1992 16.14 1993 8.451 1994 7.486 1995 7.417 1996 1.174 1997 1.492 1998 1.056 1999 1.534 2000 2.66 2001 3.891 2002 4.575 2003 3.277 2004 8.037 2005 6.973 2006 8.67 2007 9.17 2008 8.264 2009 6.3 2010 2.77 2011 2.603 2012 2.361 2013 2.74