1851 0.25 1852 2.00 1853 0.25 1854 0.25 1855 0.25 1856 0.25 1857 2.00 1858 0.25 1859 0.25 1860 0.25 1861 0.25 1862 0.25 1863 1.00 1864 0.25 1865 0.25 1866 0.25 1867 0.25 1868 3.00 1869 0.25 1870 0.25 1871 2.50 1872 4.00 1873 1.50 1874 3.25 1875 4.00 1876 2.50 1877 2.00 1878 2.00 1879 2.50 1880 2.75 1881 2.50 1882 1.25 1883 3.00 1884 2.00 1885 3.00 1886 2.50 1887 2.00 1888 2.00 1889 2.25 1890 1.50 1891 1.75 1892 2.75 1893 2.50 1894 3.50 1895 3.00 1896 3.00 1897 3.75 1898 1.50 1899 1.00 1900 2.25 1901 2.00 1902 3.50 1903 1.25 1904 2.75 1905 1.50 1906 2.25 1907 2.50 1908 2.25 1909 2.50 1910 1.50 1911 3.00 1912 3.25 1913 1.50 1914 3.25 1915 3.00 1916 2.25 1917 2.50 1918 3.25 1919 2.00 1920 3.00 1921 1.75 1922 1.25 1923 2.00 1924 1.25 1925 1.50 1926 1.75 1927 3.00 1928 2.75 1929 2.25 1930 5.75 1931 2.50 1932 2.00 1933 1.75 1934 2.25 1935 2.00 1936 1.00 1937 2.75 1938 1.25 1939 3.50 1940 1.50 1941 4.75 1942 1.75 1943 2.25 1944 2.00 1945 1.75 1946 1.00 1947 1.00 1948 1.50 1949 1.50 1950 2.75 1951 1.75 1952 1.50 1953 1.50 1954 1.50 1955 1.75 1956 1.50 1957 1.75 1958 1.25 1959 1.00 1960 1.00 1961 1.25 1962 2.50 1963 2.00 1964 0.75 1965 1.25 1966 1.00 1967 1.25 1968 0.50 1969 0.50 1970 1.00 1971 1.25 1972 1.25 1973 1.25 1974 1.00 1975 1.00 1976 1.25 1977 1.00 1978 0.50 1979 1.25 1980 0.75 1981 1.00 1982 1.50 1983 3.00 1984 0.75 1985 1.75 1986 2.00 1987 1.00 1988 0.75 1989 1.50 1990 1.00 1991 1.25 1992 1.50 1993 1.00 1994 1.00 1995 0.50 1996 0.75 1997 1.25 1998 1.00 1999 0.50 2000 0.25 2001 1.50 2002 0.50 2003 0.75 2004 1.25 2005 0.50 2006 1.00 2007 0.75 2008 1.00