January 01, 1983
June 01, 1986
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January 01, 1987
July 01, 1986
January 01, 1990
April 09, 1981
February 01, 1990
March 01, 1986
March 01, 1988
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January 01, 1990
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September 01, 1987
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October 13, 1994
September 14, 1995
June 05, 1991