RateLadder has been collecting default sale information from various lenders (pensioner and L5 come to mind) to get a picture of the default recovery for lenders. This is a bit labor intensive and requires the cooperation of other lenders. I've recently spotted a quicker way to collect default statistics.
The Prosper Marketplace Performance page provides all the necessary information. After doing a search, look under Performance Data at Defaults (D) and Net Defaults (ND).
The amount recovered for the lender after fees is (D - ND). To calculate the recovered percentage, use (D-ND)/D. I've pulled a few of the favorites just for fun (I'm odd like that), but I didn't have the patience to do a cross-correlation with auto funding.