Dec 31, 1986

Dec 31, 1986

Jun 01, 1994

Dec 31, 1994

Sep 01, 1997

Oct 31, 1997

Nov 15, 1998

Dec 31, 1998

Nov 30, 1999

Oct 01, 2000

Dec 31, 2001

Dec 31, 2002

Sep 03, 2003

Mar 24, 2004

Apr 21, 2005

Jun 04, 2008

Jun 11, 2010

Oct 03, 2010

TBD