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Between 2015 and 2060, Muslim population is projected to increase by 70%, from 1.76 billion to 3 billion.[1] This compares with the 32% growth of world population during the same period.[2]
According to a study published in 2011 by Pew Research, whilst there is a lack of reliable data, religious conversion might have no net impact on the Muslim population as the number of people who convert to Islam is thought to be similar to those who leave Islam.[3][4][5] According to another study published in 2015 by the Pew Research Center, Islam is expected to gain a net of 3 million adherents through religious conversion between 2010 and 2050, which makes Islam the second largest religion in terms of net gains through religious conversion after religiously unaffiliated, mostly comes from Sub-Saharan Africa (2.9 million).[6] In 1900 Muslims only numbered 200 million followers or 12% of the world population. This percentage drastically increased over the last 100 years due to higher birth rate in Muslim majority countries.[7][8] Pew Research have estimated the number will be around 2.2 billion in 2030 and 2.8 billion, or 30 percent of world population, in 2050.[9][10]