CaliforniaGirl7, I'd like to share with you what we were taught as New Members:
It's easier to take the top ten in size, and realize that, in any given year, ABC could have two members more than XYZ, and vice versa. Worrying about who has what (with the exception of the wonderful site that ariesrising has
http://www.threebluestars.com/greek) is an exercise in frustration!