The 2008 CIA World Factbook

by United States. Central Intelligence Agency

China
1.9% of GDP (1999)

Colombia
4.7% of GDP (2006)

Comoros
3.8% of GDP (2002)

Congo, Democratic Republic of the
NA

Congo, Republic of the
1.9% of GDP (2005)

Cook Islands
0.2% of GDP (2001)

Costa Rica
4.9% of GDP (2004)

Cote d'Ivoire
4.6% of GDP (2001)

Croatia
4.5% of GDP (2004)

Cuba
9.1% of GDP (2006)