Dec 31, 1983

Aug 01, 1987

Nov 01, 1987

Dec 31, 1987

Dec 31, 1988

Jul 14, 1989

Dec 01, 1989

Dec 08, 1989

Dec 31, 1989

Dec 31, 1989

Dec 31, 1989

Dec 31, 1989

Dec 31, 1989

Dec 31, 1989

Dec 31, 1989

Dec 31, 1989

Sep 01, 1990

Dec 31, 1990

Dec 31, 1990

Jan 01, 1991

Apr 01, 1991

Sep 01, 1991

Nov 01, 1991

Dec 31, 1991

Dec 31, 1991

Dec 31, 1991

Dec 31, 1991

Jan 01, 1992

Dec 31, 1992

Dec 31, 1992

Dec 31, 1992

Dec 12, 1993

Dec 25, 1993

Dec 31, 1993

Jan 01, 1994

Aug 01, 1994