In 1900, Muslims only numbered 200 million followers or 12% of the world population. This percentage increased over the last 100 years due to a higher birth rate found in Muslim majority countries and reached about 25% or 2 billion in 2025.
In 1900, Muslims only numbered 200 million followers or 12% of the world population. This percentage increased over the last 100 years due to a higher birth rate found in Muslim majority countries and reached about 25% or 2 billion in 2025.
Source: Wikipedia "Muslim population growth" · CC BY-SA 4.0
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