The 2006 CIA World Factbook

by United States. Central Intelligence Agency

Bulgaria
23.8% of GDP (2005 est.)

Burkina Faso
20.7% of GDP (2005 est.)

Burma
11.5% of GDP (2005 est.)

Burundi
11.6% of GDP (2005 est.)

Cambodia
23.3% of GDP (2005 est.)

Cameroon
17.3% of GDP (2005 est.)

Canada
20.5% of GDP (2005 est.)

Cape Verde
24.8% of GDP (2005 est.)

Chad
18.2% of GDP (2005 est.)

Chile
22.1% of GDP (2005 est.)