The 2008 CIA World Factbook

by United States. Central Intelligence Agency

Turkey
21.5% of GDP (2007 est.)

Turkmenistan
32.5% of GDP (2007 est.)

Uganda
25.4% of GDP (2007 est.)

Ukraine
27.4% of GDP (2007 est.)

United Arab Emirates
20.3% of GDP (2007 est.)

United Kingdom
18.2% of GDP (2007 est.)

United States
15.5% of GDP (2007 est.)

Uruguay
13.9% of GDP (2007 est.)

Venezuela
23.7% of GDP (2007 est.)

Vietnam
37.1% of GDP (2007 est.)