Population: 38,580,949 (July 1998 est.)
Age structure: 0-14 years: 33% (male 6,474,927; female 6,321,404) 15-64 years: 62% (male 11,725,078; female 12,333,982) 65 years and over: 5% (male 780,486; female 945,072) (July 1998 est.)
Population growth rate: 1.89% (1998 est.)
Birth rate: 24.93 births/1,000 population (1998 est.)
Death rate: 5.69 deaths/1,000 population (1998 est.)
Net migration rate: -0.34 migrant(s)/1,000 population (1998 est.)
Sex ratio: at birth: 1.03 male(s)/female under 15 years: 1.02 male(s)/female 15-64 years: 0.95 male(s)/female 65 years and over: 0.83 male(s)/female (1998 est.)
Infant mortality rate: 25.44 deaths/1,000 live births (1998 est.)
Life expectancy at birth: total population: 70.06 years male: 66.15 years female: 74.11 years (1998 est.)
Total fertility rate: 2.9 children born/woman (1998 est.)