March 2011 (before Panda) - 104k pageviews
May 2011 (after) - 35k pageviews
March 2012 (after fix) - 96.5k pageviews
Figures are for first full month after event. Stats have fluctuated with some Panda updates since, but not by much. Past 4 month average has been around 70k, but that's normal for the time of year.
Most rankings returned or are stronger. Some didn't recover but I kept the content as I thought it was decent. New content resulted in some of the new traffic.