Souvenir T-shirts

I'm wearing my World Memory Championship 2003 T-shirt at the moment. It's extremely groovy, but it sets me wondering "when was the last world championship that gave us T-shirts?" Was it 2003? Or did they do that at one or both of the Bahrain ones? I get a shirt every year from the German championship (which is good, because I don't own many shirts and I prefer not to buy clothes if I can possibly avoid it), but you don't often get one at the Worlds.

What I really wish they'd do is give out souvenir trousers at memory competitions. I only own two wearable pairs, and one of those is my work trousers that I couldn't be seen in public in outside of work hours for fear of being thought uncool.