I would bet that 99% of cruisers who go overboard are either intoxicated or on on drugs.
I also remember the couple who was using the railing during sex and fell overboard. They were saved. Lots of video footage and embarrassment.
NCL-Pride of America-May 2011-Hawaii
Carnival Elation-Feb 2011-Mexico
Carnival Elation-Nov 2010-Mexico
Carnival Dream-Oct 2010-Eastern Caribbean
RCL Oasis-May 2010-Western Caribbean
Carnival Fantasy-April 2010-Mexico
HAL Ryndam-Sept 2009-Alaska
Carnival Holiday-May 2009-Cozumel
Carnival Celebration-April 2008-Key West, Nassau
Carnival Liberty-May 2007-Panama Canal
Carnival Miracle-Apr 2006 (1st for DH)- Mexico, Belize
Carnival Holiday-Feb 2005-Mexico
Carnival Fascination-Dec 2000-Nassau