July 13, 1992
September 30, 1991
September 30, 1991
March 11, 1991
April 30, 1990
October 31, 1988
February 1, 1988
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May 19, 1986
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May 28, 1984
January 30, 1984
September 5, 1983
March 1, 1980
July 9, 1977
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July 15, 1972