The following demographic statistics are from the CIA World Factbook, unless otherwise indicated [REF].
Age structure: 0-14 years: 43.8% (male 39,127,615/female 37,334,281) 15-24 years: 19.3% (male 17,201,067/female 16,451,357) 25-54 years: 30.1% (male 25,842,967/female 26,699,432) 55-64 years: 3.8% (male 3,016,896/female 3,603,048) 65 years and over: 3% (male 2,390,154/female 2,840,722) (2013 est.) .