According to the Eurobarometer 2010, 37% of Belgian citizens responded that they believe there is a God. 31% answered that they believe there is some sort of spirit or life-force. 27% answered that they do not believe there is any sort of spirit, God, or life-force. 5% did not respond. According to the Eurobarometer 2015, 60.7% of the total population of Belgium adhered to Christianity, with Roman Catholicism being the largest denomination with 52.9%. Protestants comprised 2.1% and Orthodox Christians were the 1.6% of the total. Non-religious people comprised 32.0% of the population and were divided between atheists (14.9%) and agnostics (17.1%). A further 5.2% of the population was Muslim and 2.1% were believers in other religions. The same survey held in 2012 found that Christianity was the largest religion in Belgium, accounting for 65% of Belgians.