Another quantitative method of classifying national economies is by per capita GDP or per capita income. The World Bank classifies countries into high-income, upper-middle income, lower-middle income, and low-income groups. The range of incomes for each group, in dollars, and examples of nations in each group are as follows:
Table 19.1 World Bank Income Classifications
Here are the numbers and percentages of the world’s population in each of these groups, based on aggregate data from 2002, the most recent I could locate:
Table 19.2 Population and Percentage of World’s Population in World Bank Income Classifications ...