Dec 31, 1988

Jun 11, 1988

Jun 04, 1988

Jun 01, 1987

Jun 01, 1987

Dec 31, 1986

Dec 31, 1986

Jun 01, 1986

Dec 31, 1985

Dec 31, 1984

Dec 31, 1984

Dec 31, 1984

Dec 31, 1984

Dec 31, 1983

Dec 31, 1983

Dec 31, 1983

Dec 31, 1983

Dec 31, 1982

Dec 31, 1982

Dec 31, 1982

Dec 31, 1982

Dec 31, 1982

Dec 31, 1981

Dec 31, 1981

Dec 31, 1980

Dec 31, 1980

Dec 31, 1980

Dec 31, 1979

Dec 31, 1979

Dec 31, 1979

Dec 31, 1979

Dec 31, 1979

Dec 31, 1979

Dec 31, 1979

Jun 01, 1979

Dec 31, 1978