line 1 1895 54.181 10.0 1896 55.748 10.0 1897 55.454 10.0 1898 55.662 10.0 1899 54.320 10.0 1900 56.417 10.0 1901 55.652 10.0 1902 55.216 10.0 1903 54.404 10.0 1904 54.530 10.0 1905 54.558 10.0 1906 55.207 10.0 1907 54.990 10.0 1908 55.587 10.0 1909 55.352 10.0 1910 56.348 10.0 1911 56.249 10.0 1912 53.564 10.0 1913 54.840 10.0 1914 56.052 10.0 1915 54.961 10.0 1916 54.925 10.0 1917 53.574 10.0 1918 55.529 10.0 1919 55.791 10.0 1920 54.724 10.0 1921 57.502 10.0 1922 55.635 10.0 1923 54.860 10.0 1924 54.457 10.0 1925 56.469 10.0 1926 55.932 10.0 1927 56.067 10.0 1928 55.579 10.0 1929 54.570 10.0 1930 55.943 10.0 1931 57.200 10.0 1932 55.871 10.0 1933 56.533 10.0 1934 57.972 10.0 1935 56.032 10.0 1936 55.944 10.0 1937 55.336 10.0 1938 57.235 10.0 1939 56.729 10.0 1940 55.556 10.0 1941 56.194 10.0 1942 55.475 10.0 1943 55.989 10.0 1944 55.859 10.0 1945 55.817 10.0 1946 56.609 10.0 1947 56.046 10.0 1948 55.378 10.0 1949 55.463 10.0 1950 55.162 10.0 1951 55.211 10.0 1952 56.232 10.0 1953 57.085 10.0 1954 56.989 10.0 1955 55.872 10.0 1956 55.961 10.0 1957 55.570 10.0 1958 55.642 10.0 1959 55.888 10.0 1960 55.217 10.0 1961 55.896 10.0 1962 55.442 10.0 1963 56.335 10.0 1964 55.392 10.0 1965 54.765 10.0 1966 55.006 10.0 1967 55.577 10.0 1968 55.294 10.0 1969 55.091 10.0 1970 55.285 10.0 1971 55.300 10.0 1972 55.598 10.0 1973 55.926 10.0 1974 55.931 10.0 1975 54.929 10.0 1976 55.661 10.0 1977 56.267 10.0 1978 54.913 10.0 1979 54.283 10.0 1980 55.899 10.0 1981 56.717 10.0 1982 54.690 10.0 1983 56.238 10.0 1984 55.585 10.0 1985 55.515 10.0 1986 57.211 10.0 1987 56.921 10.0 1988 56.219 10.0 1989 55.834 10.0 1990 57.423 10.0 1991 57.046 10.0 1992 56.670 10.0 1993 54.936 10.0 1994 56.329 10.0 1995 56.445 10.0 1996 55.646 10.0 1997 55.947 10.0 1998 57.780 10.0 1999 56.960 10.0 2000 58.05