Age structure:
0-14 years: 23.2% (male 1,966,017/female 1,877,963)
15-64 years: 67.8% (male 5,625,963/female 5,628,146)
65 years and over: 9.1% (male 627,746/female 875,872) (2009 est.)
Median age:
total: 31.4 years
male: 30.4 years
female: 32.4 years (2009 est.)
Population growth rate:
0.881% (2009 est.) country comparison to the world: 136