From the latest PEW survey:

For the first 13 years of the decade, Americans embraced the Internet at a whirlwind pace. The percentage of Americans who use the Internet grew to 84 percent in 2013 from 52 percent at the turn of the century, according to data from the Pew Research Center.

But since 2013, the percentage of American adults who go online has remained virtually unchanged, according a new Pew study released on Tuesday. The 15 percent of Americans who still do not use the Internet is essentially the same portion as in 2013.

So why the slowdown?

Pew found that Americans who remain offline do so for a number of reasons: the cost of buying a computer and paying a broadband or cellphone bill, the perceived relevance of Internet content or even the physical ability to use devices.