Population: 4,583,379 (July 1998 est.)
Age structure: 0-14 years: 44% (male 1,017,190; female 1,000,436) 15-64 years: 53% (male 1,191,323; female 1,251,828) 65 years and over: 3% (male 52,836; female 69,766) (July 1998 est.)
Population growth rate: 2.92% (1998 est.)
Birth rate: 36.04 births/1,000 population (1998 est.)
Death rate: 5.8 deaths/1,000 population (1998 est.)
Net migration rate: -1.09 migrant(s)/1,000 population (1998 est.)
Sex ratio: at birth: 1.04 male(s)/female under 15 years: 1.02 male(s)/female 15-64 years: 0.95 male(s)/female 65 years and over: 0.76 male(s)/female (1998 est.)
Infant mortality rate: 42.26 deaths/1,000 live births (1998 est.)
Life expectancy at birth: total population: 66.62 years male: 64.26 years female: 69.08 years (1998 est.)
Total fertility rate: 4.28 children born/woman (1998 est.)