Mobile Surpasses Search as the Lead Ad Format, 2016 | PWC

This chart shows that mobile revenues have increased 86% from 31% of total reported in Q2 2015 to 48% of the total in Q2 2016.
Mobile revenues consisted of Mobile Search with $3.9 billion, Mobile Display-related formats include Banners and Video with $4.0 billion and Mobile Other with $256 million.