I voted 25-30 as a guess, but now I have tried to remember and it is more like 33 or so, that includes Japan (1), W.A (2), S.A (3), N.S.W (3), Victoria lots including a number of closed down centers, which include the one I worked at RINGWOOD. Other include Squash Bowl, Box Hill, Corio, etc.
Cheers Reusy