TA members nowadays?

[Maemi]

I have been searching and searching through the forum, but couldn't find what I was looking for! My apologies if there is a thread like this one.

I want to know...

-Exactly, how many members TA has now?
-Does TA's members have some privileges on Ayu's concerts?
-When officially, TA was created?
-Is it maybe known, if there were times, when TA members were giving up on TA membership and leaving away?

Thanks in advance