Even as many people gravitate away from religion, the percentage of the world population claiming no religious affiliation will likely fall in the coming decades, according to a new Pew Research Center report.

The overall number of religious “nones” — those who choose “none” when asked about their religious affiliation — is expected to rise in absolute terms, from 1.17 billion in 2015 to 1.2 billion in 2060. However, their share of the world population is expected to decline, Pew reports.

Some experts believe Christianity in China is on the rise, while the number of religiously unaffiliated in that nation is shrinking.

Religious “nones” are older and have fewer children than the religiously affiliated. And while their ranks are growing, religiously affiliated populations are outpacing them.

Religious “nones” include atheists, agnostics and those who do not identify with a specific religion. The median age of this group is 36, compared with a median age of 29 among those who belong to any of the world’s religions.

Pew predicts that by 2060, the religiously unaffiliated will represent 13 percent of the world population, compared with 16 percent of the population in 2015.