The 2005 CIA World Factbook

by United States. Central Intelligence Agency

Burundi
10.7% of GDP (2004 est.)

Cambodia
20.9% of GDP (2004 est.)

Cameroon
16.1% of GDP (2004 est.)

Canada
19.4% of GDP (2004 est.)

Cape Verde
19.2% of GDP (2004 est.)

Chad
24.7% of GDP (2004 est.)

Chile
23.9% of GDP (2004 est.)

China
46% of GDP (2004 est.)

Colombia
15.8% of GDP (2004 est.)

Congo, Republic of the
25.8% of GDP (2004 est.)