It's slightly different in cases like this though.  If Rolf did not commit the offences, the police don't have to go looking for anyone else, so the unsolved crime stats don't come into it.

I think all the identical charges could be rolled into one.  If an accuser says she was touched inappropriately on 4 separate occasions, the jury can't really know if the defendent did it on 3, but not the 4th, for example.  If the charges are different (one inappropriate touching and one where things went further than this, or the same charge but by two different accusers), then these need to be considered individually, IMO.