The 2005 CIA World Factbook

by United States. Central Intelligence Agency

Sao Tome and Principe
31.5% of GDP (2004 est.)

Saudi Arabia
17.2% of GDP (2004 est.)

Senegal
20.1% of GDP (2004 est.)

Serbia and Montenegro
14.4% of GDP (2004 est.)

Seychelles
39.5% of GDP (2004 est.)

Singapore
27.4% of GDP (2004 est.)

Slovakia
24% of GDP (2004 est.)

Slovenia
24.9% of GDP (2004 est.)

South Africa
16.7% of GDP (2004 est.)

Spain
25.4% of GDP (2004 est.)