Age structure:
0-14 years: 31.8% (male 4,135,013/female 3,898,761) 15-64 years: 63.3% (male 8,026,755/female 7,965,332) 65 years and over: 4.9% (male 548,970/female 699,302) (2008 est.)
Median age:
total: 24.6 years male: 24 years female: 25.3 years (2008 est.)
Population growth rate:
1.742% (2008 est.)
Birth rate:
22.44 births/1,000 population (2008 est.)
Death rate:
5.02 deaths/1,000 population (2008 est.)