Heh... add I'm at a school with 1200 people in my grade alone... and there are only two, including me, that I know play the ukulele.
However, that's about to change... I've inspired one of my friends to take it up, and as soon as she can go out and buy one, she's going to do so.
I've done my part.
But yeah... it would seem that the instrument is gaining popularity rapidly... here's some stats from a local family owned music store that carries a rather nice entry level ukulele...
Sales in '04 ~10
Sales in '05 ~ 10
Sales in '06 ~ 16
Sales in '07 ~ 30, after which they ran out of them, and then discovered that their supplier was on backorder because so many of the ukes had been selling.
The things are in demand....
And no, those numbers weren't exact... they were as best as I can remember from a conversation with a store owner.