According to IAB’s latest Internet Advertising Revenue Report, social media ad revenue in the US amounted to $13.1 billion in the first six months of 2018, up 38 percent from the first half of 2017. Social media advertising now accounts for 26 percent of total internet advertising revenue, a sharp increase over its 8 percent share in 2012. IAB estimated that digital ad spending is on track to pass the $100 billion milestone for the first time this year.
Source: Richter, F. (2018, November 14). Social Media Ad Boom Continues. Statista.