hey i feel your pain! when i was 18 (i'm 21 now) it was pretty sparse, but now its starting to come in nice, i think when i turn 23-24 i will be joining the big guys. i wish i had a pic up, maybe later.
Mine is patchy at best. I happened across some photos where it's full and luscious, including my passport pic, and I'm wondering how the hell I managed to grow it so.
To be honnest I wouldnt grow a beard, I work in a bakery at the moment and if you have anything more than stubble they make you wear a hair net for your chin, I'll bring one home sometime.
The point is I look stupid at work anyway, I dont want to look worse.