A growing number of Americans are accessing the Internet solely through mobile devices, according to new estimates released by digital market research company eMarketer.

eMarketer Releases Updated Estimates for US Digital Users

More than 78 percent of Internet users this year — or about 214.6 million people — will regularly use mobile devices to access the web. Approximately 40.7 million of those people — or about 15 percent of the Internet-using population — will access the Internet only through mobile phones, up from 14 percent (36.6 million) in 2016 and 12 percent (32.1 million) in 2015.

According to the eMarketer report, those numbers are only expected to grow, with mobile-only Internet users comprising 52.3 million people in five years.

By contrast, the practice of accessing the Internet solely via desktop or laptop computers is becoming a rarity in the U.S. Only 17.9 million Americans will access the Internet through either a desktop or laptop this year, down from 20.3 million in 2016 and 24.7 million in 2015.  And the number is expected to only decline in the future: eMarketer predicts that only about 10.5 million people will access the Internet through desktop or laptop computers by 2021.

The findings are part of a new eMarketer report titled “U.S. Digital Users: The eMarketer Forecast for 2017,” which was released in February.