5 years
male: 21.5 years
female: 21.5 years (2008 est.)

Togo
total: 18.6 years
male: 18.2 years
female: 19 years (2008 est.)

Tonga
total: 21.8 years
male: 21.3 years
female: 22.3 years (2008 est.)

Trinidad and Tobago
total: 32.3 years
male: 31.9 years
female: 32.8 years (2008 est.)

Tunisia
total: 28.8 years
male: 28.2 years
female: 29.3 years (2008 est.)

Turkey
total: 29 years
male: 28.8 years
female: 29.2 years (2008 est.)

Turkmenistan
total: 22.6 years
male: 22 years
female: 23.1 years (2008 est.)

Turks and Caicos Islands
total: 27.8 years
male: 28.5 years
female: 27 years (2008 est.)

Tuvalu
total: 25.2 years
male: 24.2 years
female: 26.4 years (2008 est.)

Uganda
total: 15 years
male: 14.9 years
female: 15.1 years (2008 est.)

Ukraine
total: 39.4 years
male: 36.1 years
female: 42.5 years (2008 est.)

United Arab Emirates
total: 30.1 years
male: 32 years
female: 24.6 years (2008 est.)

United Kingdom
total: 39.9 years
male: 38.8 years
female: 41 years (2008 est.)

United States
total: 36.7 years
male: 35.4 years
female: 38.1 years (2008 est.)

Uruguay
total: 33.2 years
male: 31.8 years
female: 34.6 years (2008 est.)

Uzbekistan
total: 24.3 years
male: 23.8 years
female: 24.8 years (2008 est.)

Vanuatu
total: 23.8 years
male: 23.8 years
female: 23.8 years (2008 est.)

Venezuela
total: 25.2 years
male: 24.6 years
female: 25.8 years (2008 est.)

Vietnam
total: 26.9 years
male: 25.8 years
female: 28 years (2008 est.)

Virgin Islands
total: 38.5 years
male: 38 years
female: 39 years (2008 est.)

West Bank
total: 20.2 years
male: 20 years
female: 20.4 years (2008 est.)

World
total:
male: 27.4 years
female: 28.7 years (2008 est.)

Yemen
total: 16.7 years
male: 16.7 years
female: 16.8 years (2008 est.)

Zambia
total: 16.9 years
male: 16.8 years
female: 17.1 years (2008 est.)

Zimbabwe
total: 17.6 years
male: 16.4 years
female: 18.8 years (2008 est.)

This page was last updated on 18 December 2008

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@2178 Oil - proved reserves (bbl)

Afghanistan
0 bbl (1 January 2006 est.)

Albania
199.1 million bbl (1 January 2008 est.)

Algeria
12.2 billion bbl (1 January 2008 est.)

American Samoa