The 2008 CIA World Factbook

by United States. Central Intelligence Agency

Brazil
2.6% of GDP (2006 est.)

Brunei
4.5% of GDP (2006)

Bulgaria
2.6% of GDP (2005 est.)

Burkina Faso
1.2% of GDP (2006)

Burma
2.1% of GDP (2005 est.)

Burundi
5.9% of GDP (2006 est.)

Cambodia
3% of GDP (2005 est.)

Cameroon
1.3% of GDP (2006)

Canada
1.1% of GDP (2005 est.)

Cape Verde
0.7% of GDP (2005)