The growing world population combined with an increasing number of smart devices, faster broadband speeds, more Internet videos and growth in WiFi connections will see global Internet traffic surge, Cisco predicts. By 2016, global IP traffic will hit 1.3 zettabytes a year, nearly four times its 2011 level. One zettabyte equals 1 billion terabytes. As of 2009, the entire Internet contained about half a zettabyte, or 500 exabytes, of information. Consumer videos will be the major driver of growth, Cisco predicted.