May 5, 1997
November 11, 1996
December 3, 1995
March 28, 1994
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January 1, 1990
December 31, 1989
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April 11, 1988
February 16, 1987
August 5, 1985
October 30, 1983
August 15, 1983
June 20, 1982
May 23, 1981
June 3, 1978
January 1, 1970
January 1, 1970
