The global [[atheism]] and religious [[demography]] research below covers the time period from 1900 to the end of 2016. In addition, the research below includes irreligion/religion demographic projections going as far as 2100. | The global [[atheism]] and religious [[demography]] research below covers the time period from 1900 to the end of 2016. In addition, the research below includes irreligion/religion demographic projections going as far as 2100. |