line 1 1895 53.878 1.0 1896 53.458 1.0 1897 52.048 1.0 1898 51.488 1.0 1899 51.618 1.0 1900 52.318 1.0 1901 50.148 1.0 1902 51.768 1.0 1903 50.998 1.0 1904 50.148 1.0 1905 51.338 1.0 1906 53.478 1.0 1907 48.158 1.0 1908 53.518 1.0 1909 49.778 1.0 1910 54.508 1.0 1911 50.858 1.0 1912 51.558 1.0 1913 52.358 1.0 1914 51.948 1.0 1915 55.548 1.0 1916 51.208 1.0 1917 49.558 1.0 1918 49.898 1.0 1919 52.138 1.0 1920 47.618 1.0 1921 51.768 1.0 1922 51.168 1.0 1923 50.798 1.0 1924 51.128 1.0 1925 55.538 1.0 1926 50.908 1.0 1927 52.408 1.0 1928 48.898 1.0 1929 52.008 1.0 1930 55.258 1.0 1931 51.908 1.0 1932 52.418 1.0 1933 50.778 1.0 1934 54.628 1.0 1935 50.538 1.0 1936 51.048 1.0 1937 51.038 1.0 1938 52.598 1.0 1939 52.378 1.0 1940 51.068 1.0 1941 53.058 1.0 1942 53.988 1.0 1943 53.838 1.0 1944 49.958 1.0 1945 51.168 1.0 1946 55.558 1.0 1947 51.948 1.0 1948 54.318 1.0 1949 53.028 1.0 1950 49.648 1.0 1951 50.688 1.0 1952 52.608 1.0 1953 49.668 1.0 1954 55.058 1.0 1955 53.798 1.0 1956 50.348 1.0 1957 51.638 1.0 1958 51.308 1.0 1959 52.558 1.0 1960 53.538 1.0 1961 49.568 1.0 1962 52.768 1.0 1963 52.868 1.0 1964 52.258 1.0 1965 52.848 1.0 1966 50.938 1.0 1967 52.028 1.0 1968 51.638 1.0 1969 53.618 1.0 1970 50.528 1.0 1971 51.338 1.0 1972 51.818 1.0 1973 49.858 1.0 1974 52.598 1.0 1975 47.878 1.0 1976 52.928 1.0 1977 55.118 1.0 1978 52.608 1.0 1979 51.168 1.0 1980 52.458 1.0 1981 56.198 1.0 1982 49.708 1.0 1983 48.088 1.0 1984 50.648 1.0 1985 55.378 1.0 1986 53.908 1.0 1987 54.498 1.0 1988 52.828 1.0 1989 53.768 1.0 1990 53.458 1.0 1991 53.598 1.0 1992 53.478 1.0 1993 50.928 1.0 1994 53.718 1.0 1995 50.498 1.0 1996 51.698 1.0 1997 48.958 1.0 1998 51.968 1.0 1999 52.548 1.0 2000 53.448