There are more than 800 crore people on the planet. Over 200 crore Muslims and Christians make up the greatest population in this region, according to the Worldometers survey. The primary cause of this is the fertility rate, which contributes to the steady rise in the number of adherents of these religions.
 
The most recent PU Research analysis indicates that between 2010 and 2020, the Muslim population grew extremely quickly.
 
The percentage of Muslims with children under the age of 15 was 35% in 2010, which is higher than the global average.  The Jewish and Buddhist groups, on the other hand, had a higher percentage of elderly individuals, which has slowed down their rate of growth.

The average number of children born over a woman's lifetime is known as the total fertility rate.
 
The overall fertility rate for Muslims was 3.1 between 2010 and 2015, compared to 2.7 for Christians. The fertility rates for Buddhists and those who were not associated with any religion, on the other hand, were 1.6 and 1.7, respectively.
 
According to the Pew Research Report, Muslim women had an average of over three children between 2010 and 2020.
 
More Muslims than any other religion are under the age of 14, with 33% of the world's Muslim population under that age, according to the Pew Research Center.

According to Pew's 2010 report, the number of Muslims in the united states is expected to increase from 6.2 million by 2030 to 8.1 million by 2050 due to the rapid growth of Muslim migration to the country.  

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