According to Statista global revenue from mobile advertising almost doubled in 2012, increasing from $4.9 billion back in 2011 to $9.1 billion.

In North America alone, the amount spent on mobile ads per mobile subscription reached $9.39 on 2012 compared to $4.53 on the previous year. That fact puts North America as the leader in mobile advertising worldwide. Western Europe follows with $2.91 spent on mobile ads per mobile subscription, more than double the amount spent on the previous year.