line 1
1895   51.868  3.0
1896   51.831  3.0
1897   51.218  3.0
1898   51.301  3.0
1899   50.308  3.0
1900   52.174  3.0
1901   51.068  3.0
1902   52.391  3.0
1903   51.498  3.0
1904   51.154  3.0
1905   52.471  3.0
1906   50.228  3.0
1907   50.501  3.0
1908   52.628  3.0
1909   49.971  3.0
1910   54.981  3.0
1911   52.654  3.0
1912   49.894  3.0
1913   51.038  3.0
1914   51.988  3.0
1915   50.901  3.0
1916   51.564  3.0
1917   48.348  3.0
1918   52.778  3.0
1919   51.588  3.0
1920   49.661  3.0
1921   53.398  3.0
1922   51.498  3.0
1923   50.094  3.0
1924   49.318  3.0
1925   53.828  3.0
1926   51.131  3.0
1927   52.041  3.0
1928   51.734  3.0
1929   52.094  3.0
1930   52.224  3.0
1931   50.851  3.0
1932   50.718  3.0
1933   51.474  3.0
1934   54.624  3.0
1935   51.088  3.0
1936   53.264  3.0
1937   51.224  3.0
1938   53.131  3.0
1939   53.148  3.0
1940   51.754  3.0
1941   52.208  3.0
1942   52.148  3.0
1943   51.331  3.0
1944   50.838  3.0
1945   52.308  3.0
1946   54.338  3.0
1947   50.884  3.0
1948   51.758  3.0
1949   52.528  3.0
1950   49.974  3.0
1951   50.621  3.0
1952   50.954  3.0
1953   51.488  3.0
1954   51.584  3.0
1955   52.351  3.0
1956   51.601  3.0
1957   51.528  3.0
1958   51.131  3.0
1959   52.301  3.0
1960   50.178  3.0
1961   51.288  3.0
1962   51.638  3.0
1963   53.198  3.0
1964   51.501  3.0
1965   50.358  3.0
1966   52.008  3.0
1967   51.754  3.0
1968   51.811  3.0
1969   51.028  3.0
1970   50.724  3.0
1971   50.481  3.0
1972   52.804  3.0
1973   51.851  3.0
1974   53.138  3.0
1975   49.684  3.0
1976   52.121  3.0
1977   54.054  3.0
1978   51.844  3.0
1979   51.514  3.0
1980   51.374  3.0
1981   53.371  3.0
1982   51.531  3.0
1983   50.178  3.0
1984   50.968  3.0
1985   54.344  3.0
1986   54.408  3.0
1987   54.058  3.0
1988   52.871  3.0
1989   52.918  3.0
1990   53.014  3.0
1991   53.698  3.0
1992   53.751  3.0
1993   51.821  3.0
1994   53.641  3.0
1995   51.534  3.0
1996   51.184  3.0
1997   51.614  3.0
1998   52.538  3.0
1999   52.438  3.0
2000   54.808