I was working through a sorted member list; you aren't the only one with a restricted profile and I didn't want to look at everyone's postbit just to see when they had joined, probably.
It's something I could update. Getting a query straight from the database would be much quicker than spending time going through the member list though.
Wow, what a piece of work. I love stats. Is there a standard deviation> Any "outliers"? Amazing work!