Switzerland
total: 40.1 years
male: 39 years
female: 41.1 years (2006 est.)
Syria
total: 20.7 years
male: 20.6 years
female: 20.9 years (2006 est.)
Taiwan
total: 34.6 years
male: 34.1 years
female: 35 years (2006 est.)
Tajikistan
total: 20 years
male: 19.7 years
female: 20.4 years (2006 est.)
Tanzania
total: 17.7 years
male: 17.5 years
female: 18 years (2006 est.)
Thailand
total: 31.9 years
male: 31.1 years
female: 32.8 years (2006 est.)
Togo
total: 18.3 years
male: 17.8 years
female: 18.7 years (2006 est.)
Tonga
total: 20.7 years
male: 20.1 years
female: 21.3 years (2006 est.)
Trinidad and Tobago
total: 31.2 years
male: 30.8 years
female: 31.7 years (2006 est.)
Tunisia
total: 27.8 years
male: 27.3 years
female: 28.3 years (2006 est.)