The 2010 CIA World Factbook

by United States. Central Intelligence Agency

Uganda
3.3% of GDP (2009)

Ukraine
5.3% of GDP (2007)

United Arab Emirates
0.9% of GDP (2008)

United Kingdom
5.6% of GDP (2007)

United States
5.5% of GDP (2007)

Uruguay
2.9% of GDP (2006)

Uzbekistan
9.4% of GDP (1991)

Vanuatu
6.9% of GDP (2008)

Venezuela
3.7% of GDP (2007)

Vietnam
5.3% of GDP (2008)