1981
1961
1962
1971
1971
1997
1963
1962
1983
1979
1995
1974
1964
1979
1967
1991
1989
1992
1994
1969
1978
1985
1961
1963
1965
1987
1961
1961
1961
1975
1969
1975
1975
1964
1962
1978
1981
1974
1964
1963
1979
1974
1986
1986
1988
1981
1961
1987
1975
1971
1961
1962
1963
1962
1980
1991
Comments