Barbados
males age 18-49: 71,330 (2005 est.)
Belarus
males age 18-49: 2,520,644 (2005 est.)
Belgium
males age 16-49: 2,436,736 (2005 est.)
Belize
males age 18-49: 60,750 (2005 est.)
Benin
males age 21-49: 1,207,071
females age 21-49: 1,216,180 (2005 est.)
Bhutan
males age 18-49: 483,860 (2005 est.)
Bolivia
males age 18-49: 1,923,234 (2005 est.)
Bosnia and Herzegovina
males age 18-49: 1,034,367 (2005 est.)
Botswana
males age 18-49: 350,649 (2005 est.)
Brazil
males age 19-49: 45,586,036 (2005 est.)