"...Asia is also experiencing growth as world
Christianity' s center has moved not only South , but
also East . In the last century, Christianity grew at
twice the rate of population in that continent. Asia' s
Christian population of 350 million is projected to
grow to 460 million by 2025.
The global religious wildcard is China. Even today ,
demographers estimate that more Christian believers
are found worshipping in China on any given Sunday
than in the United States. Future trends, while
difficult to predict because so much is below the
religious radar, could dramatically drive ...."
http://www.washingtonpost.com/news/acts-of-faith/wp/2015/05/20/think-christianity-is-dying-no-christianity-is-shifting-dramatically/