Dec 31, 2018

Oct 25, 2011

Dec 31, 2010

Dec 05, 2008

Dec 31, 1999

Nov 30, 1998

Oct 23, 1998

Dec 01, 1992

Oct 01, 1987

May 01, 1986

Jul 01, 1984

Mar 01, 1984

Dec 31, 1983

Dec 31, 1983

Dec 01, 1983

Dec 01, 1983

Dec 01, 1983

Nov 01, 1983

Nov 01, 1983

Mar 01, 1983

Feb 01, 1983

Nov 12, 1982

Jul 01, 1982

Jun 06, 1981

TBD