I'm from Belize, Central America. They usually only get a handful of people selected every year (>10 sometimes). I really hope that's not the case.
It seems like this year they registered 22 winners for Belize. I don't know if all 22 have been notified, and I don't know what your country's quota is, but it seems low. Last year there was only one visa issued, the year before it was 8.
http://www.travel.state.gov/pdf/FY12AnnualReport-TableVII.pdf
It all depends on who qualifies, how many dependents they have, and whether their case numbers are lower than yours.
Though deal Is there a way you can find out how many interviews were scheduled at the embassy in Belize? At least you'd know how many people bothered to follow through. If what I'm speculating is correct, you may get a visa number if somebody is disqualified, but you'd rather know it for a fact, so you can call the US embassy in Belize for information whether this is correct or not. Good luck.