Dec 31, 1991

Dec 01, 1987

Dec 31, 1986

Dec 31, 1986

Dec 31, 1986

Dec 31, 1986

Jul 01, 1986

May 01, 1986

May 01, 1986

Dec 31, 1985

Dec 31, 1983

Dec 31, 1983

Dec 31, 1983

Dec 31, 1983

Dec 31, 1983

Dec 31, 1983

Oct 01, 1983

Mar 01, 1983

Feb 01, 1983

Dec 31, 1982

Dec 10, 1982

Dec 01, 1982

Jul 16, 1982

May 08, 1982

Jan 13, 1982

Oct 01, 1981

Sep 01, 1981

Dec 01, 1980

Nov 17, 1979

Sep 15, 1979

TBD

TBD