Total social media advertising spending within the 17 Western European countries covered in this forecast is expected to reach €4.3 billion by 2019, up from €2.6 billion in 2014, growing at a five-year compound annual growth rate (CAGR) of 10.5%. This report estimates both the number of social media users and the social media spending for the 17 Western Europe countries. It also provides an estimate of the number of users accessing social sites through mobile devices and the advertising spend over mobile devices targeting those users. The report provides historical data going back to 2008 and a five-year forecast.