Out of home revenue increased 4.2% to $6.9 million for the full year 2013 according to this article in out-of-home magazine. Out-of-home revenues have grown faster than the economy and faster than other forms of local media as you can see in the following chart:
Sector | 2011Change | 2012Change | 2013Change |
Out of Home Revenue | +5% | +5% | +4% |
US Radio Revenue | +1% | +1% | Flat |
US GDP | +3% | +4% | +3% |