Age structure: 0-14 years: 16% (male 623,285; female 591,655) 15-64 years: 68% (male 2,610,573; female 2,685,190) 65 years and over: 16% (male 546,029; female 739,962) (2000 est.)
Population growth rate: -1.16% (2000 est.)
Birth rate: 8.06 births/1,000 population (2000 est.)
Death rate: 14.63 deaths/1,000 population (2000 est.)
Net migration rate: -5.06 migrant(s)/1,000 population (2000 est.)
Sex ratio: at birth: 1.06 male(s)/female under 15 years: 1.05 male(s)/female 15-64 years: 0.97 male(s)/female 65 years and over: 0.74 male(s)/female total population: 0.94 male(s)/female (2000 est.)
Infant mortality rate: 15.13 deaths/1,000 live births (2000 est.)
Life expectancy at birth: total population: 70.91 years male: 67.45 years female: 74.56 years (2000 est.)
Total fertility rate: 1.13 children born/woman (2000 est.)
Nationality: noun: Bulgarian(s) adjective: Bulgarian