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 2.328 1822 2.328 1823 2.328 1824 2.328 1825 2.327 1826 2.329 1827 2.328 1828 2.327 1829 2.328 1830 2.329 1831 2.328 1832 2.328 1833 2.327 1834 2.328 1835 2.328 1836 2.328 1837 2.328 1838 2.327 1839 2.329 1840 2.328 1841 2.328 1842 2.329 1843 2.328 1844 2.328 1845 2.328 1846 2.328 1847 2.328 1848 2.328 1849 2.328 1850 2.328 1851 2.328 1852 1.853 1853 1.854 1854 1.853 1855 1.854 1856 1.853 1857 1.853 1858 1.853 1859 1.854 1860 1.853 1861 1.854 1862 1.238 1863 1.238 1864 1.238 1865 1.238 1866 1.238 1867 1.237 1868 1.238 1869 1.238 1870 1.238 1871 1.238 1872 1.265 1873 1.265 1874 1.266 1875 1.266 1876 1.266 1877 1.266 1878 1.266 1879 1.266 1880 1.266 1881 1.265 1882 1.287 1883 1.287 1884 1.287 1885 1.286 1886 1.287 1887 1.287 1888 1.287 1889 1.287 1890 1.287 1891 1.287 1892 1.354 1893 1.354 1894 1.354 1895 1.354 1896 1.354 1897 1.354 1898 1.354 1899 1.354 1900 1.354 1901 1.354 1902 -0.6458 1903 -0.6452 1904 -0.6455 1905 -0.6456 1906 -0.6455 1907 -0.6451 1908 -0.6456 1909 -0.6454 1910 -0.646 1911 -0.6453 1912 -0.2534 1913 -0.2535 1914 0.5669 1915 0.5675 1916 0.5676 1917 0.5672 1918 0.5675 1919 0.5678 1920 0.567 1921 0.5675 1922 2.352 1923 2.351 1924 2.352 1925 2.352 1926 2.352 1927 2.352 1928 2.352 1929 2.352 1930 2.352 1931 2.352 1932 2.352 1933 2.352 1934 2.352 1935 2.352 1936 2.352 1937 2.352 1938 2.352 1939 2.352 1940 2.352 1941 2.352 1942 2.352 1943 2.352 1944 2.352 1945 2.352 1946 2.352 1947 3.643 1948 3.642 1949 3.643 1950 3.642 1951 7.397 1952 6.974 1953 6.579 1954 6.221 1955 5.909 1956 5.653 1957 5.462 1958 5.344 1959 5.305 1960 5.333 1961 7.712 1962 9.059 1963 -5.092 1964 4.984 1965 11.41 1966 3.978 1967 10.61 1968 6.896 1969 7.501 1970 9.505 1971 1.578 1972 1.031 1973 2.064 1974 13.48 1975 -2.044 1976 4.294 1977 3.781 1978 4.915 1979 7.708 1980 4.483 1981 -2.196 1982 -5.276 1983 0.02887 1984 3.056 1985 0.5977 1986 4.603 1987 2.067 1988 2.997 1989 3.129 1990 -3.607 1991 -4.424 1992 -7.473 1993 0.5837 1994 3.85 1995 2.443 1996 2.985 1997 4.422 1998 6.098 1999 0.3662 2000 2.131 2001 -2.746 2002 0.3064 2003 1.835 2004 3.518 2005 3.94 2006 5.69 2007 1.613 2008 0.3353 2009 -4.127 2010 0.1977 2011 0.5291 2012 -0.01976 2013 -0.7272