The 2010 CIA World Factbook

by United States. Central Intelligence Agency

Bosnia and Herzegovina
7.93% (31 December 2009 est.)
6.98% (31 December 2008 est.)

Botswana
13.76% (31 December 2009 est.)
16.54% (31 December 2008 est.)

Brazil
44.65% (31 December 2009 est.)
47.25% (31 December 2008 est.)

Brunei
5.5% (31 December 2009 est.)
5.5% (31 December 2008 est.)

Bulgaria
11.34% (31 December 2009 est.)
10.86% (31 December 2008 est.)

Burkina Faso
NA% (31 December 2009 est.)
NA% (31 December 2008 est.)

Burma
17% (31 December 2009 est.)
17% (31 December 2008 est.)

Burundi
14.08% (31 December 2009 est.)
16.52% (31 December 2008 est.)

Cambodia
17% (31 December 2009)
16.01% (31 December 2008)

Cameroon
NA% (31 December 2009 est.)
NA% (31 December 2008 est.)