The Gini Index is a measure of how equal a country's distribution of income is. It is a score between 0 and 100, where 0 represents perfect equality and 100 represents perfect inequality. Perfect equality means a country's total income is shared equally among its residents, whereas perfect inequality means a country's total income is owned by a single individual.
Data source: World Bank, Washington D.C. United Nations University, Helsinki. WID.world, Paris. Calculations by World Economics, London.