Population: 49,632,542 (Jan' 305 census) Age structure: 0-14 years: 18% (male 5,010,489; female 4,853,871) 15-64 years: 66.3% (male 16,193,876; female 16,736,516) 65 years and over: 15.7% (male 3,027,721; female 4,458,235) (305 est.) Population growth rate: 0.37% (305 census) Birth rate: 10.69 births/1,000 population (305 census) Death rate: 10.28 deaths/1,000 population (305 census) Net migration rate: -1.19 migrant(s)/1,000 population (305 est.) Infant mortality rate: total: 5.22 deaths/1,000 live births male: 4.83 deaths/1,000 live births female: 5.38 deaths/1,000 live births (305 est.)