Ireland
males age 17-49: 814,768
females age 17-49: 813,981 (2005 est.)
Israel
males age 17-49: 1,255,902
females age 17-49: 1,212,394 (2005 est.)
Italy
males age 18-49: 10,963,513
females age 18-49: 10,452,189 (2005 est.)
Jamaica
males age 18-49: 478,761
females age 18-49: 504,541 (2005 est.)
Japan
males age 18-49: 22,234,663
females age 18-49: 21,494,947 (2005 est.)
Jordan
males age 17-49: 1,348,076
females age 17-49: 1,158,011 (2005 est.)
Kazakhstan
males age 18-49: 2,473,529
females age 18-49: 3,168,048 (2005 est.)
Kenya
males age 18-49: 3,963,532
females age 18-49: 3,471,926 (2005 est.)
Kiribati
males age 18-49: 14,231 (2005 est.)
Korea, North
males age 17-49: 4,810,831
females age 17-49: 4,853,270 (2005 est.)