Population: 5,651,634 (July 1997 est.)

Age structure: 0-14 years: 40% (male 1,163,416; female 1,113,654) 15-64 years: 56% (male 1,571,685; female 1,564,757) 65 years and over: 4% (male 109,547; female 128,575) (July 1997 est.)

Population growth rate: 2.62% (1997 est.)

Birth rate: 30.47 births/1,000 population (1997 est.)

Death rate: 4.24 deaths/1,000 population (1997 est.)

Net migration rate: 0 migrant(s)/1,000 population (1997 est.)

Sex ratio: at birth: 1.05 male(s)/female under 15 years: 1.04 male(s)/female 15-64 years: 1 male(s)/female 65 years and over: 0.85 male(s)/female total population : 1.01 male(s)/female (1997 est.)

Infant mortality rate: 22.3 deaths/1,000 live births (1997 est.)

Life expectancy at birth: total population: 74.1 years male: 72.6 years female: 75.68 years (1997 est.)

Total fertility rate: 4.08 children born/woman (1997 est.)