By Ryan Burge, American Religious Data Archives, 3/30/20.
Sometimes a simple graph tells the story.
In 1972, nearly one third of the American population (32.8%) were white Christians who attended church nearly once a week or more.
In 2018, their share of the population had dropped in half to 16.8%.
Tweeted by ARDA, The American Religious Data Archive. https://twitter.com/ryanburge/status/1244727413659045888?s=21