Question: According to Pew Research in 2015, what percentage of the U.S population self-identified with this Protestant Christian denomination that Lakeland University is affiliated with?
Sentence (from "United Church of Christ"): The United Church of Christ (UCC) is a mainline Protestant Christian denomination, with historical confessional roots in the Reformed, Congregational and Evangelical Protestant traditions, and "with over 5,000 churches and nearly one million members".
Relevant evidence: Yes