Population: 3,490,356 (July 1998 est.)
Age structure: 0-14 years: 21% (male 383,960; female 361,244) 15-64 years: 72% (male 1,252,427; female 1,255,795) 65 years and over: 7% (male 105,417; female 131,513) (July 1998 est.)
Population growth rate: 1.2% (1998 est.)
Birth rate: 13.79 births/1,000 population (1998 est.)
Death rate: 4.68 deaths/1,000 population (1998 est.)
Net migration rate: 2.87 migrant(s)/1,000 population (1998 est.)
Sex ratio: at birth: 1.08 male(s)/female under 15 years: 1.06 male(s)/female 15-64 years: 1 male(s)/female 65 years and over: 0.8 male(s)/female (1998 est.)
Infant mortality rate: 3.87 deaths/1,000 live births (1998 est.)
Life expectancy at birth: total population: 78.49 years male: 75.46 years female: 81.77 years (1998 est.)
Total fertility rate: 1.46 children born/woman (1998 est.)