The 2001 CIA World Factbook

by United States. Central Intelligence Agency

Bulgaria:
5% (2000 est.)

Burkina Faso:
5% (2000 est.)

Burma:
4.9% (2000 est.)

Burundi:
1.8% (2000 est.)

Cambodia:
4% (2000 est.)

Cameroon:
4.4% (2000 est.)

Canada:
4.3% (2000 est.)

Cape Verde:
6% (2000 est.)

Cayman Islands:
4.9% (1999 est.)

Central African Republic:
3.5% (2000 est.)