Dec 31, 1977

Feb 20, 1982

Dec 10, 1982

Mar 01, 1983

Jul 20, 1984

Nov 08, 1984

Feb 15, 1985

Mar 01, 1985

May 25, 1985

Jun 01, 1985

Jun 04, 1985

Sep 09, 1985

Dec 01, 1985

Dec 31, 1985

Apr 01, 1986

Aug 01, 1986

Aug 18, 1986

Oct 01, 1986

Jun 20, 1987

Dec 20, 1987

Feb 05, 1988

Apr 01, 1988

Jun 14, 1988

Sep 01, 1988

Sep 01, 1988

Nov 01, 1988

Dec 01, 1988

Feb 09, 1989

Apr 01, 1989

Apr 14, 1989

Sep 01, 1989

Oct 28, 1990

Dec 01, 1991

Dec 13, 1991

Dec 27, 1991