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 0.6084 1822 0.6084 1823 0.6084 1824 0.6084 1825 0.6084 1826 0.6084 1827 0.6084 1828 0.6084 1829 0.6084 1830 0.6084 1831 0.6084 1832 0.6084 1833 0.6084 1834 0.6084 1835 0.6084 1836 0.6084 1837 0.6084 1838 0.6084 1839 0.6084 1840 0.6084 1841 0.6084 1842 0.6084 1843 0.6084 1844 0.6084 1845 0.6084 1846 0.6084 1847 0.6084 1848 0.6084 1849 0.6084 1850 0.6084 1851 0.6084 1852 0.6084 1853 0.6084 1854 0.6084 1855 0.6084 1856 0.6084 1857 0.6084 1858 0.6084 1859 0.6084 1860 0.6084 1861 0.6084 1862 0.6084 1863 0.6084 1864 0.6084 1865 0.6084 1866 0.6084 1867 0.6084 1868 0.6084 1869 0.6084 1870 0.6084 1871 0.6084 1872 0.6084 1873 0.6084 1874 0.6084 1875 0.6084 1876 0.6084 1877 0.6084 1878 0.6084 1879 0.6084 1880 0.6084 1881 0.6084 1882 0.6084 1883 0.6084 1884 0.6084 1885 0.6084 1886 0.6084 1887 0.6084 1888 0.6084 1889 0.6084 1890 0.6084 1891 0.6084 1892 0.6084 1893 0.6084 1894 0.6084 1895 0.6084 1896 0.6084 1897 0.6084 1898 0.6084 1899 0.6084 1900 0.6084 1901 0.6084 1902 0.6084 1903 0.6084 1904 0.6084 1905 0.6084 1906 0.6084 1907 0.6084 1908 0.6084 1909 0.6084 1910 0.6084 1911 0.6084 1912 0.6084 1913 0.6084 1914 0.6084 1915 0.6084 1916 0.6084 1917 0.6084 1918 0.6084 1919 0.6084 1920 0.6084 1921 0.6084 1922 2.336 1923 2.336 1924 2.336 1925 2.336 1926 2.336 1927 2.336 1928 2.336 1929 2.336 1930 2.336 1931 2.336 1932 2.514 1933 2.514 1934 2.514 1935 2.514 1936 2.514 1937 2.514 1938 2.514 1939 2.514 1940 2.514 1941 2.514 1942 2.514 1943 2.514 1944 2.514 1945 2.514 1946 2.514 1947 2.514 1948 2.514 1949 -0.3375 1950 -0.3375 1951 12.81 1952 2.263 1953 -3.346 1954 8.367 1955 2.638 1956 1.418 1957 2.59 1958 1.015 1959 5.057 1960 4.211 1961 -1.062 1962 9.17 1963 6.344 1964 5.498 1965 3.611 1966 12.82 1967 4.017 1968 5.201 1969 1.876 1970 5.863 1971 4.32 1972 6.68 1973 3.169 1974 2.44 1975 5.462 1976 7.41 1977 2.97 1978 3.04 1979 1.4 1980 1.039 1981 -0.9156 1982 1.534 1983 -0.2563 1984 2.665 1985 -0.07215 1986 3.355 1987 4.967 1988 4.175 1989 3.602 1990 4.012 1991 2.596 1992 1.094 1993 1.245 1994 0.9809 1995 3.433 1996 5.339 1997 -0.451 1998 3.68 1999 3.523 2000 5.093 2001 6.475 2002 7.586 2003 6.182 2004 7.423 2005 7.573 2006 6.737 2007 7.148 2008 7.437 2009 6.022 2010 7.043 2011 6.449 2012 7.687 2013 7.11