贫困差距，按每天6.85美元每天衡量的（2017 PPP）（百分比） - United States, Iran, Islamic Rep.
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.
