Sep 10, 1979

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Dec 31, 1987

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Mar 31, 1989

Jun 05, 1989

Oct 03, 1989

Dec 31, 1989

Dec 31, 1989

Dec 31, 1990

Feb 01, 1991

Feb 14, 1991

May 01, 1991

Nov 01, 1991

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Dec 17, 1991

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Jan 01, 1992

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May 05, 1992

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Apr 01, 1993

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