عدد السكان في الفئة العمرية صفر-14، الإجمالي - Bulgaria
Staff estimates, World Bank ( WB ), note: Staff estimates using the World Bank's total population and age/sex distributions of the United Nations Population Division's World Population Prospects., publisher: World Bank staff estimates using the World Bank's total population and age/sex distributions of the United Nations Population Division's data.;
World Population Prospects, United Nations ( UN ), publisher: UN Population Division
