How many Christians are in the world?
Christianity by country
{'answer_start': array([39]), 'answer_text': array(['more than 2.3 billion'], dtype=object)}
 As of the year 2015, Christianity has more than 2.3 billion adherents, out of about 7.5 billion people.[1][2][3][4][lower-alpha 1] The faith represents one-third of the world's population and is the largest religion in the world, with the three largest groups of Christians being the Catholic Church, Protestantism, and the Eastern Orthodox Church.[5] The largest Christian denomination is the Catholic Church, with 1.2 billion adherents.[6] The second largest Christian branch is either Protestantism (if it is considered a single group), or the Eastern Orthodox Church (if Protestants are considered to be divided into multiple denominations). 