In most of the poor nations of the world today, 3 children is the average number of children born to a woman.
Low fertility rates are the norm in most of the world's regions, and the global fertility rate has declined to below 2.5 children per woman. Currently, 80% of the world's population lives in nations with a fertility rate below 3 children per woman. On the opposite end of the spectrum, a small number of nations, which are home to about 10% of the world's population, nonetheless have women who have more than five children on average. While many of the nations with the greatest fertility rates in the 1950s witnessed a fast decline in the number of children per woman, the nations that already had low fertility rates only minimally increased their fertility rates.
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