The 2013 Super Bowl was the third-most watched television event in American history.
108.41 million tuned in to see the Baltimore Ravens eke out a win over the San Francisco 49ers. That's more than any broadcast ever — except for the 2012 and 2011 Super Bowls, both of which drew slightly more viewers. (Last year's Super Bowl was viewed by just over 111 million.)
Earlier, CBS touted the game's record-breaking 48.1/71 rating in several metered markets. That means that one out of every two televisions in the country was watching the game. The blackout that struck in the third quarter was not included. In the end, the broadcast was the second-highest-rated Super Bowl in 27 years.
Note: this post has been updated to reflect the changing information about the Super Bowl ratings.