Year Google Facebook Yahoo Microsoft AOL Total
2009 0.36 0.56 1.26 0.37 0.51 7.97
2010 0.86 1.21 1.43 0.51 0.47 9.91
2011 1.67 1.73 1.36 0.60 0.53 12.33
2012 2.26 2.18 1.35 0.90 0.70 14.78
2013 2.99 3.17 1.27 0.79 0.73 17.72

Source: eMarketer. “US Ad Spending Forecast,” 2012-2014. “US Online Ad Spending,” 2011.

Note: Display is made up of rich media, video, sponsorships, and banner advertising