贫困人口比例，按每天2.15美元每天衡量的（2017 PPP）（占人口的百分比） - Upper middle income, Lower middle income
World Bank, Poverty and Inequality Platform. Data are based on primary household survey data obtained from government statistical agencies and World Bank country departments. Data for high-income economies are mostly from the Luxembourg Income Study database. For more information and methodology, please see pip.worldbank.org.
