est.)

Sri Lanka
total: 29.1 years
male: 28 years
female: 30.1 years (2004 est.)

Sudan
total: 17.9 years
male: 17.7 years
female: 18.1 years (2004 est.)

Suriname
total: 25.8 years
male: 25.4 years
female: 26.3 years (2004 est.)

Swaziland
total: 18.6 years
male: 18.4 years
female: 18.8 years (2004 est.)

Sweden
total: 40.3 years
male: 39.2 years
female: 41.5 years (2004 est.)

Switzerland
total: 39.5 years
male: 38.5 years
female: 40.5 years (2004 est.)

Syria
total: 20 years
male: 19.9 years
female: 20.2 years (2004 est.)

Taiwan
total: 33.7 years
male: 33.3 years
female: 34.1 years (2004 est.)

Tajikistan
total: 19.5 years
male: 19.2 years
female: 19.8 years (2004 est.)

Tanzania
total: 17.6 years
male: 17.3 years
female: 17.8 years (2004 est.)

Thailand
total: 30.5 years
male: 29.7 years
female: 31.2 years (2004 est.)

Togo
total: 17.6 years
male: 17.2 years
female: 17.9 years (2004 est.)

Tonga
total: 20.1 years
male: 19.7 years
female: 20.7 years (2004 est.)

Trinidad and Tobago
total: 30.4 years
male: 30 years
female: 30.9 years (2004 est.)

Tunisia
total: 26.8 years
male: 26.3 years
female: 27.3 years (2004 est.)

Turkey
total: 27.3 years
male: 27.1 years
female: 27.5 years (2004 est.)

Turkmenistan
total: 21.3 years
male: 20.4 years
female: 22.2 years (2004 est.)

Turks and Caicos Islands
total: 27.2 years
male: 27.9 years
female: 26.5 years (2004 est.)

Tuvalu
total: 24.2 years
male: 23.1 years
female: 25.6 years (2004 est.)

Uganda
total: 14.8 years
male: 14.7 years
female: 14.9 years (2004 est.)

Ukraine
total: 38.1 years
male: 34.8 years
female: 41.1 years (2004 est.)

United Arab Emirates
total: 27.7 years
male: 35.7 years
female: 22.4 years (2004 est.)

United Kingdom
total: 38.7 years
male: 37.6 years
female: 39.8 years (2004 est.)

United States
total: 36 years
male: 34.7 years
female: 37.4 years (2004 est.)

Uruguay
total: 32.2 years
male: 30.7 years
female: 33.7 years (2004 est.)

Uzbekistan
total: 22.1 years
male: 21.4 years
female: 22.7 years (2004 est.)

Vanuatu
total: 22.3 years
male: 22.3 years
female: 22.2 years (2004 est.)

Venezuela
total: 25.2 years
male: 24.6 years
female: 25.8 years (2004 est.)

Vietnam
total: 24.9 ye