 Together, the Ngalop, Sharchop, and tribal groups constituted up to 72 percent of the population in the late 1980s according to official Bhutanese statistics.The CIA Factbook, however, estimates Ngalop and Sharchop populations together to total about 50 percent, with indigenous and migrant tribes constituting 15 percent – or 65 percent altogether.Bhutan also had a sizable modern Tibetan refugee population, although there are no Tibetan communities or villages in the country.