This is what Americans really think about same-sex marriage.

Support for same-sex marriage has steadily grown over the past 15 years. (Image: REUTERS/Artur Bainozarov)

In Pew Research Center polling in 2004, Americans opposed same-sex marriage by a margin of 60% to 31%.

Support for same-sex marriage has steadily grown over the past 15 years. And today, support for same-sex marriage remains near its highest point since…