Benin
males age 18-49: 76,661
females: 75,068 (2005 est.)
Bermuda
males age 18-49: 408 (2005 est.)
Bhutan
males age 18-49: 23,939
females age 18-49: 21,979 (2005 est.)
Bolivia
males age 18-49: 101,101
females age 18-49: 98,671 (2005 est.)
Bosnia and Herzegovina
males age 18-49: 32,942
females age 18-49: 31,466 (2005 est.)
Botswana
males age 18-49: 21,103
females age 18-49: 21,379 (2005 est.)
Brazil
males age 18-49: 1,785,930
females age 19-49: 1,731,648 (2005 est.)
British Virgin Islands
males age 18-49: 201 (2005 est.)
Brunei
males age 18-49: 3,478
females age 18-49: 3,342 (2005 est.)
Bulgaria
males age 18-49: 51,023
females age 18-49: 48,651 (2005 est.)