Internet advertising soaked up record revenues of $42.8 billion in 2013, the Interactive Advertising Bureau announced in a new report on Thursday. A 17 percent increase over 2012's results, last year's number helped the online ad industry beat the $40.1 billion in sales seen by traditional TV advertising. That achievement marked a first for online ad sales. Mobile ads contributed to the growth in 2013 with $7.1 billion in revenues, a 110 percent jump from the $3.4 billion generated the previous year. "The news that interactive has outperformed broadcast television should come as no surprise," IAB president and CEO Randall Rothenberg said in a statement. "It speaks to the power that digital screens have in reaching and engaging audiences. In that same vein, the staggering growth of mobile is clearly a direct response to how smaller digital screens play an integral role in consumers' lives throughout the day, as well as their critical importance to cross-screen experiences."