13 years. Then I got my 2nd one about 8 months later. Witness on the first one, no witness on the 2nd, but if I was going to lie about it I would just say i've got about 40 of them.
( I also got a practice shot ace last spring when I threw my drive, then took out another disc I had recently bought and wanted to try out and i'll be damned if it didn't go in. But I don't count that as one of my "real" aces.) I come close all the time, but I guess i'm just not meant to ace much.