line 1
1895    51.26 12.0
1896    52.80 12.0
1897    52.33 12.0
1898    52.09 12.0
1899    51.81 12.0
1900    53.49 12.0
1901    52.61 12.0
1902    52.39 12.0
1903    51.36 12.0
1904    51.85 12.0
1905    51.72 12.0
1906    52.46 12.0
1907    52.27 12.0
1908    52.77 12.0
1909    52.14 12.0
1910    53.18 12.0
1911    52.79 12.0
1912    51.06 12.0
1913    52.39 12.0
1914    52.72 12.0
1915    52.30 12.0
1916    51.68 12.0
1917    50.88 12.0
1918    52.64 12.0
1919    52.29 12.0
1920    51.79 12.0
1921    54.52 12.0
1922    52.77 12.0
1923    52.42 12.0
1924    51.34 12.0
1925    53.28 12.0
1926    52.74 12.0
1927    52.90 12.0
1928    52.68 12.0
1929    51.63 12.0
1930    52.79 12.0
1931    54.36 12.0
1932    52.56 12.0
1933    53.83 12.0
1934    54.93 12.0
1935    52.70 12.0
1936    52.96 12.0
1937    52.38 12.0
1938    54.03 12.0
1939    54.09 12.0
1940    52.71 12.0
1941    53.59 12.0
1942    52.72 12.0
1943    52.94 12.0
1944    52.73 12.0
1945    52.60 12.0
1946    53.82 12.0
1947    52.80 12.0
1948    52.50 12.0
1949    52.93 12.0
1950    52.26 12.0
1951    51.95 12.0
1952    53.14 12.0
1953    54.20 12.0
1954    54.14 12.0
1955    52.52 12.0
1956    53.16 12.0
1957    52.91 12.0
1958    52.78 12.0
1959    52.93 12.0
1960    52.25 12.0
1961    52.69 12.0
1962    52.72 12.0
1963    53.06 12.0
1964    52.49 12.0
1965    52.46 12.0
1966    52.29 12.0
1967    52.58 12.0
1968    52.13 12.0
1969    52.29 12.0
1970    52.44 12.0
1971    52.51 12.0
1972    52.18 12.0
1973    53.10 12.0
1974    53.06 12.0
1975    52.28 12.0
1976    52.27 12.0
1977    53.33 12.0
1978    51.81 12.0
1979    51.68 12.0
1980    53.14 12.0
1981    53.89 12.0
1982    52.10 12.0
1983    52.67 12.0
1984    52.76 12.0
1985    52.03 12.0
1986    54.08 12.0
1987    54.09 12.0
1988    53.34 12.0
1989    52.48 12.0
1990    54.25 12.0
1991    53.88 12.0
1992    53.30 12.0
1993    51.98 12.0
1994    53.61 12.0
1995    53.41 12.0
1996    52.58 12.0
1997    52.94 12.0
1998    54.94 12.0
1999    54.53 12.0
2000    53.99