Reports World Values Survey shows decline in religiosity across the world.
Ronald Inglehart, "Giving Up on God: The Global Decline of Religion - Revisited," World Values Survey, February 20, 2021, accessed October 12, 2021
But since 2007, things have changed with surprising speed. From about 2007 to 2019, the overwhelming majority of the countries we studied—43 out of 49—became less religious. The decline in belief was not confined to high-income countries and appeared across most of the world.