NEW YORK – According to an annual report on Consumer Mobility from the Bank of America and Flurry Analytics, the U.S. population is perpetually plugged-in, with nearly three-quarters of those surveyed (71%) saying that they actually sleep with their smartphones. This year’s report follows the group’s first study, conducted in mid-2014, which uncovered the rise of a new breed of mobile users: the Mobile Addicts.

The trend is not limited to the United States, says the report, but is global in fact. From Q2 of 2014 to Q2 of 2015, the total population of smart devices, as measured by Flurry, grew from 1.3 billion to 1.8 billion, a 38% year-over-year growth. “Regular Users,” consumers who use apps between one and 16 times daily, grew from 784 million to 985 million in the same period, a 25% increase. “Super Users,” consumers who use apps between 16 and 60 times daily, grew even more in that same period from 440 million to 590 million, a 34% increase.

“Mobile Addicts,” consumers who launch applications 60 times or more per day, are growing at the fastest rate, from 176 million in Q2 2014 to a whopping 280 million in Q2 2015, a 59% increase, says the report.

To put things in perspective, notes the report, if the number of Mobile Addicts in 2014 had been the population of a country, such country would have been the eighth largest in the world, slightly below Nigeria. In 2015, the growth of the Mobile Addicts population would have propelled that country to the fourth spot, just below the United States and ahead of Indonesia.

To better understand Mobile Addicts, the study looked at the categories of applications they are using and found that Mobile Addicts usage over-indexed in all categories, but most significantly for messaging and social apps. This further validates assumptions that Mobile Addicts are using their smart device as their sole computing device and conducting every aspect of their lives on that device.