Age structure:
0-14 years: 31% (male 4,162,862/female 4,034,044) 15-64 years: 63.8% (male 8,299,266/female 8,562,290) 65 years and over: 5.1% (male 602,725/female 753,628) (2008 est.)
Median age:
total: 25.2 years male: 24.6 years female: 25.8 years (2008 est.)
Population growth rate:
1.498% (2008 est.)
Birth rate:
20.92 births/1,000 population (2008 est.)
Death rate:
5.1 deaths/1,000 population (2008 est.)