1976 – 1977
December 1976
February 1977
June 1977
August 1977
October 1977
December 1977
1978
February 1978
April 1978
June 1978
August 1978
October 1978
December 1978
1979
Jan / Feb 1979
Mar / Apr 1979
June 1979
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August 1979
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November 1979
1980
January 1980
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April 1980
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June 1980
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August 1980
September 1980
November 1980
December 1980
1981
January 1981
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March 1981
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December 1981
1982
January 1982
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August 1982
September 1982
October 1982
November 1982
December 1982
1983
January 1983
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June 1983
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December 1983
1984
January 1984
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November 1984
December 1984
1985
January 1985
February 1985
March 1985
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November 1985
December 1985
1986
January 1986
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August 1986
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October 1986
November 1986
December 1986
1987
January 1987
February 1987
May 1987
June 1987
October 1987
November 1987
1988
January 1988
March 1988
April 1988
May 1988
July 1988
October 1988
December 1988
1989
