"3,000 years, give or take. Well, that's when I met him and travelled with him for a couple of months. Got exterminated, got brought back - forever. Waited 140 odd years to find him again, hitched a lift to the end of the universe, got caught up with the Master, spent a very unpleasant year which never actually happened, and decided I'd had enough. Went back to Torchwood. Still there. He pops back to visit me once a century or so. You?"