Dec 31, 1990

Dec 31, 1989

Dec 31, 1989

Dec 31, 1989

Dec 31, 1988

Dec 31, 1988

Dec 31, 1988

Dec 31, 1988

Dec 31, 1988

Jul 01, 1988

Dec 31, 1987

Dec 31, 1987

Dec 31, 1987

Dec 31, 1987

Dec 31, 1987

Dec 30, 1987

Nov 01, 1987

Mar 31, 1987

Dec 31, 1986

Dec 31, 1986

Nov 01, 1986

Mar 31, 1986

Mar 31, 1986

Dec 31, 1985

Dec 31, 1985

Dec 31, 1985

Nov 14, 1985

Dec 31, 1984

Dec 31, 1984

Dec 31, 1984

Dec 31, 1983

Dec 31, 1983

Dec 31, 1983

Dec 31, 1983

Oct 01, 1981

Jun 06, 1981