Here's the latest, updated version of Michael Fox's annual publication of tourism statistics, taken from the BTB's publication. Although some Countrywide Belize data is included, its focus is on Ambergris Caye.

This year, a new page 12 estimating the amount of room revenue being underreported is included.
//ambergriscaye.com/art/AmbergrisCayeTourismStatistics-2007.xls
//ambergriscaye.com/art/AmbergrisCayeTourismStatistics-2007.pdf

Michael Fox is the American CPA in San Pedro, here 12 years.