1974
1980
1986
1985
1975
1976
1977
1979
1979
1981
1982
1983
1984
1985
1987
1987
1988
1989
1971
1971
1971
1974
1974
1980
1980
1981
1982
1982
1982
1982
1982,83
1983
1983
1983
1983
1983
1983
1983
1983
1984
1985
1985
1985
1985
1985
1985
1987
1987
1988
1987
1988
1988
1989
1989
1989
1977
1977
1978
1985
1985
1987
1970
1973
1979
1980
1982
1986
1984
1983
1985
1987
1988
1989
1962
1978
1982
1985
1985
1985
1987
1988
1989
1989