Internet traffic to quadruple by 2016 Google China's headquarters in Beijing. SAN JOSE, Calif., May 31 (UPI) -- Internet traffic will quadruple by 2016 and hit 1.3 zettabytes -- a trillion gigabytes -- as more people with more devices go online, experts say. By 2016, around 3.4 billion Internet users -- about 45 percent of the world population -- will be using multiple connections, networking giant Cisco said. "Each of us increasingly connects to the network via multiple devices in our always-on connected lifestyles," Suraj Shetty, Cisco's vice president of product and solutions marketing, told TG Daily. "Whether by video phone calls, movies on tablets, web-enabled TVs, or desktop video conferencing, the sum of our actions not only creates demand for zettabytes of bandwidth, but also dramatically changes the network requirements needed to deliver on the expectations of this 'new normal,'" he said. The fastest-growing sector of Internet traffic is video, expected to account for 86 percent of all data traffic by 2016, Cisco said. A demand for broadband speed and increasing WiFi use will also add to the traffic, it said.