New Zealand data use has soared in the past two years as the number of options for streaming television and movies has grown.
People used more than 84,000 terabytes of data in June, up from 34,000 terabytes in June 2013, according to Statistics NZ.
That does not include data used by mobile phone internet connections.
Residential connections used more than 90% the total data.
"This is equivalent to 45 gigabytes per household. It equates to every household watching about 27 hours of on-demand TV, or streaming 11 hours of HD video, per week," business performance senior manager Jason Attewell said.
"New Zealanders now have more options for streaming movies and TV online, and we're making the most of them.
"The greater availability of online streaming options, including subscription and non-subscription based services, has opened the door to content that often isn't broadcast in New Zealand," he said.
Some of these streaming platforms, such as Lightbox and Neon, are included with an ISP connection plan, while others such as Netflix are subscription-based.
"The increasing use of data shows how much Kiwis have embraced these services, which have only recently been introduced," Mr Attewell said.
The increase in data usage coincides with a large increase in the proportion of broadband connections that have no data cap.
In June 2015, one in three broadband connections had no data cap, compared with one in 12 a year earlier.
