Pew: World population expected to virtually stop growing by 2100

The world's population is expected to virtually stop growing by 2100, according to research released by Pew Research Center on Monday

Pew analyzed data from the United Nations indicating falling global fertility rates will lead to a population of about 10.9 billion people at the end of the century, with what analysts said is annual growth of less than 0.1 percent. 

It's a steep decline from past patterns, Pew notes. The world population grew by about 1 to 2 percent between 1950 and today, increasing the number of people by about 5.2 billion.

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Global fertility rates are expected to drop from an average of 2.5 births per woman today to 1.9 births per woman by 2100, according to the research. 

But the pattern is not consistent across all world regions. Africa is the only region to show signs of "strong population growth," while the United States, Canada, Australia and New Zealand are expected to see growth throughout the end of the century to lesser degrees, Pew reports.

In North America, especially the United States, the primary driver of continued population growth is expected to be migration, according to the report. Data indicates the immigrant population of the United States will see a net increase of 85 million between 2020 and 2100, which is expected to be roughly equal to the combined total of the next nine highest countries. 

Reported data suggests Europe and Latin America are expected to have declining populations by 2100, and Asia is expected to increase around 2055 and then begin to decline.  

Half of babies born worldwide are expected to be born in Africa, with the region projected to have five of the 10 most populated countries by 2100, according to the analysis. 

Pew also noted data indicates India will surpass China as the most populous country by 2027.