total: 36.2 years
male: 34.3 years
female: 38.2 years (2004 est.)

Portugal
total: 37.9 years
male: 35.8 years
female: 40 years (2004 est.)

Puerto Rico
total: 33.8 years
male: 32.1 years
female: 35.4 years (2004 est.)

Qatar
total: 31.4 years
male: 36.7 years
female: 22 years (2004 est.)

Reunion
total: 26.5 years
male: 25.4 years
female: 27.7 years (2004 est.)

Romania
total: 36.1 years
male: 34.7 years
female: 37.5 years (2004 est.)

Russia
total: 37.9 years
male: 34.7 years
female: 40.7 years (2004 est.)

Rwanda
total: 18.2 years
male: 18 years
female: 18.4 years (2004 est.)

Saint Helena
total: 34.7 years
male: 34.9 years
female: 34.5 years (2004 est.)

Saint Kitts and Nevis
total: 27.3 years
male: 26.5 years
female: 28.1 years (2004 est.)

Saint Lucia
total: 24.5 years
male: 23.7 years
female: 25.3 years (2004 est.)

Saint Pierre and Miquelon
total: 33.3 years
male: 33 years
female: 33.6 years (2004 est.)

Saint Vincent and the Grenadines
total: 25.8 years
male: 25.7 years
female: 26 years (2004 est.)

Samoa
total: 24.2 years
male: 26.8 years
female: 20.8 years (2004 est.)

San Marino
total: 40 years
male: 39.6 years
female: 40.3 years (2004 est.)

Sao Tome and Principe
total: 16.1 years
male: 15.5 years
female: 16.7 years (2004 est.)

Saudi Arabia
total: 21.2 years
male: 22.8 years
female: 19.1 years (2004 est.)

Senegal
total: 18 years
male: 17.4 years
female: 18.5 years (2004 est.)

Serbia and Montenegro
total: 36.6 years
male: 35.1 years
female: 38.1 years (2004 est.)

Seychelles
total: 27.3 years
male: 26.2 years
female: 28.4 years (2004 est.)

Sierra Leone
total: 17.5 years
male: 17.2 years
female: 17.8 years (2004 est.)

Singapore
total: 36.2 years
male: 35.9 years
female: 36.6 years (2004 est.)

Slovakia
total: 35.1 years
male: 33.5 years
female: 36.9 years (2004 est.)

Slovenia
total: 39.8 years
male: 38.3 years
female: 41.3 years (2004 est.)

Solomon Islands
total: 18.4 years
male: 18.3 years
female: 18.5 years (2004 est.)

Somalia
total: 17.6 years
male: 17.5 years
female: 17.6 years (2004 est.)

South Africa
total: 24.7 years
male: 24.2 years
female: 25.3 years (2004 est.)

Spain
total: 39.1 years
male: 37.8 years
female: 40.5 years (2004