20 Richest Countries in the World Gross National income (GNI) is one of the most widely used metrics for assessment of economic development of different countries as well as average income of their residents. GNI is total value of all goods and services, produced by residents of particular state within one year. Technically, GNI is GDP less net taxes on production and imports, less compensation of employees and property income payable to the rest of the world plus the corresponding items receivable from the rest of the world (in other words, GDP less primary incomes payable to non- resident Continue reading...