According to Stephanie Kramer and Yunping Tong
Migration has been steadily increasing in recent decades. Today, more than 280 million people, or 3.6% of the world’s population, are international migrants, meaning they live outside their country of birth. While the religious composition of migration flows can change significantly from year to year due to wars, economic crises, and natural disasters, the overall number of migrants changes more slowly, reflecting patterns that have accumulated over time. The religious composition of all international migrants has remained relatively stable since 1990.
As of 2020, the most recent year for which global data is available, Christians made up about 47% of all people living outside their country of birth, according to a new Pew Research Center analysis of U.N. data and 270 censuses and surveys. Muslims made up 29% of all living migrants, followed by Hindus (5%), Buddhists (4%) and Jews (1%).
Non-religious people, meaning those who claim to have no religion or who identify as atheists or agnostics, made up 13% of all people who left their country of birth and now live elsewhere.
Over the past three decades, the total number (or stock) of people living as international migrants has increased by 83%, outpacing the world population growth rate of 47%.
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