The 2007 CIA World Factbook

by United States. Central Intelligence Agency

Rwanda
total: 18.6 years
male: 18.4 years
female: 18.8 years (2006 est.)

Saint Helena
total: 36 years
male: 36.2 years
female: 35.8 years (2006 est.)

Saint Kitts and Nevis
total: 27.8 years
male: 27.1 years
female: 28.6 years (2006 est.)

Saint Lucia
total: 25.2 years
male: 24.4 years
female: 26.1 years (2006 est.)

Saint Pierre and Miquelon
total: 34.1 years
male: 33.7 years
female: 34.5 years (2006 est.)

Saint Vincent and the Grenadines
total: 26.9 years
male: 26.7 years
female: 27.1 years (2006 est.)

Samoa
total: 25.2 years
male: 28.1 years
female: 22 years (2006 est.)

San Marino
total: 40.6 years
male: 40.3 years
female: 41 years (2006 est.)

Sao Tome and Principe
total: 16.2 years
male: 15.6 years
female: 16.8 years (2006 est.)

Saudi Arabia
total: 21.4 years
male: 22.9 years
female: 19.4 years (2006 est.)