The 2008 CIA World Factbook

by United States. Central Intelligence Agency

Tuvalu
total: 11 years
male: 11 years
female: 11 years (2001)

Uganda
total: 10 years
male: 11 years
female: 10 years (2004)

Ukraine
total: 14 years
male: 14 years
female: 15 years (2006)

United Arab Emirates
total: 11 years
male: 11 years
female: 12 years (2003)

United Kingdom
total: 16 years
male: 16 years
female: 17 years (2006)

United States
total: 16 years
male: 15 years
female: 16 years (2006)

Uruguay
total: 15 years
male: 14 years
female: 16 years (2006)

Uzbekistan
total: 11 years
male: 12 years
female: 11 years (2007)

Vanuatu
total: 10 years
male: 11 years
female: 10 years (2004)

Venezuela
total: 12 years
male: 11 years
female: 12 years (2003)