Not so much now, 10 years ago there were great numbers. As time pass most are parted if not wrecked (due to high maintenance cost, repairs etc etc).Now most TT's are Z enthusiast toys, as most keep away from them due to aging troubles. NA's are more common (can be bought for as cheap as 2500 NZD)....still little enough for a Z to flash an oncoming Z if they see it drive pass :) Not really a practical car for a person not keen for one. haha
TT wise 99.5% are auto 2+2's, cause of the grey market imports from Japan. Manual TT's are quite rare, given enough time you can find the occasional manual 2+2 (took me eight months), a 2+0 manual TT will fetch quite a high price, not to mention a hardtop one!
How about the uk? Many Z's there? Since we are both RHD is it fair for me to assume most of your TT's are (auto) 2+2 ?