Sudan
males age 18-49: 5,427,474
females age 18-49: 5,649,566 (2005 est.)
Suriname
males age 18-49: 77,793
females age 18-49: 72,943 (2005 est.)
Swaziland
males age 18-49: 89,609 (2005 est.)
Sweden
males age 19-49: 1,493,668
females age 19-49: 1,441,257 (2005 est.)
Switzerland
males age 19-49: 1,375,889
females age 19-49: 1,342,945 (2005 est.)
Syria
males age 18-49: 3,453,888
females age 18-49: 3,421,558 (2005 est.)
Taiwan
males age 19-49: 4,749,537
females age 19-49: 4,644,607 (2005 est.)
Tajikistan
males age 18-49: 1,244,941
females age 18-49: 1,297,891 (2005 est.)
Tanzania
males age 18-49: 3,879,630 (2005 est.)
Thailand
males age 21-49: 10,396,032
females age 21-49: 11,487,690 (2005 est.)