Ok. For some reason was there unaired episodes on the top episode list of Charmed so I ignored them.
Shannen was in season 1-3 and there have so far been 7 season of charmed. That's 42% of all the episodes. But of the top episodes is she in 44%. In other words: 44>42. Now, thats good. Guess which episode that's considered the number one?
All Hell Breaks Loose.
(I know that this doesn't really belong here)
http://www.tv.com/charmed/show/106/top.html
I just have to ad to the 90210 statistic that she was in 38% of the episodes. And 72 is almost twice as much as 38.
/Anna