it was sarcasm that they "like" to go back obviously. Many of them I think once they have been there, don't really care if they go back. Sometimes it's the whole institutionalized thing I guess.
stats to back up which? That they want to go back, or that many of them typically do wind up back? No I don't have them.. not in front of me anyway, but you're free to do a google search and find them for your own piece of mind if you'd like.