More than exponential growth in the percent of the population with access to same sex marriage in their state:

1

Graph by Philip Cohen.

And here’s the global data, thanks to @filipspagnoli.

Bc_7N2UIIAE8pHN

Lisa Wade, PhD is a Visiting Scholar at Tulane University. She is the author of American Hookup, a book about college sexual culture; a textbook about gender; and a forthcoming Introduction to Sociology text. You can follow her on Twitter, Facebook, and Instagram.