Population:
4,320,748 (July 2009 est.) country comparison to the world: 122
Age structure:
0-14 years: 15.9% (male 353,495/female 334,592)
15-64 years: 73.3% (male 1,536,263/female 1,629,882)
65 years and over: 10.8% (male 172,070/female 294,446) (2009 est.)
Median age:
total: 34.6 years
male: 32.7 years
female: 36.7 years (2009 est.)