Pew Research Found That, in 2013, 50% of American Adults

Essay

Pew Research found that, in 2013, 50% of American adults favored allowing same-sex couples to marry legally. This is up from 48% in 2012. The 2013 estimate was based on a random sample of 1,501 adults. Assume the same sample size was used in 2012. ["Changing Attitudes on Gay Marriage," Pew Internet and American Life Project, June 2013.]
-Does this interval provide evidence that the proportion of people who favor allowing same-sex couples to marry has increased?