Gordon Ramsey Kitchen Nightmare Success Rate

The Quick List has Gordon Ramsey's success rate of his Kitchen Nightmares makeovers and the list goes up to 2012 and includes the UK shows.
The first two years had bad success- just 2 restaurants are still open.  Percentage wise, he had worse success in the United Kingdom.
Here is the web site: http://kitchennightmares.bangpipe.com/the-master-list/
Here is an example:

Episode:	Restaurant:	Location:	Air Date:	Status:
S05E01	Blackberry’s	Plainfield, NJ	23-Sep-2011	OPEN
S05E02	Leone’s	Montclair, NJ	30-Sep-2011	OPEN
S05E03	Mike & Nellie’s	Oakhurst, NJ	7-Oct-2011	CLOSED
S05E04	Luigi’s D’Italia	Anaheim, CA	14-Oct-2011	OPEN
S05E05/06	Burger Kitchen	Los Angeles, CA	4-Nov-2011	CLOSED
S05E07	The Greek At The Harbor	Ventura, CA	18-Nov-2011	OPEN
S05E08	Michon’s	College Park, GA	13-Jan-2012	OPEN
S05E09	El Greco	Austin, TX	20-Jan-2012	CLOSED
S05E10	Park’s Edge	Atlanta, GA	3-Feb-2012	OPEN
S05E11	Spin-A-Yarn Steakhouse	Fremont, CA	10-Feb-2012	OPEN
S05E12	Charlie’s	La Verne, CA	17-Feb-2012	CLOSED
DS05E13	Cafe Hon	Baltimore, MD	24-Feb-2012	OPEN
S05E14	Chiarella’s	Philadelphia, PA	23-Mar-2012	OPEN
S05E15	Zocalo	Philadelphia, PA	23-Mar-2012	OPEN