Reunion
males age 18-49: 142,578 (2005 est.)
Romania
males age 20-49: 3,932,579 (2005 est.)
Russia
males age 18-49: 21,049,651 (2005 est.)
Rwanda
males age 16-49: 1,103,823 (2005 est.)
Sao Tome and Principe
males age 18-49: 25,950 (2005 est.)
Saudi Arabia
males age 18-49: 6,592,709 (2005 est.)
Senegal
males age 18-49: 1,300,502 (2005 est.)
Serbia and Montenegro
males age 19-49: 1,959,166 (2005 est.)
Seychelles
males age 18-49: 16,122 (2005 est.)
Sierra Leone
males age 18-49: 552,785 (2005 est.)