What percentage of the world lives in middle-income countries?

Name: What percentage of the world lives in middle-income countries?
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According to the World Bank, as of 2021, 70% of the world's population lives in middle-income countries. These countries are defined as having a gross national income (GNI) per capita between $1,036 and $12,615. Examples of middle-income countries include Brazil, China, India, Mexico, and Turkey.

What Percentage of the World Lives in Middle-Income Countries