Roman Catholicism is the country's predominant faith. Brazil has the world's largest Catholic population. According to the 2010 Demographic Census (the PNAD survey does not inquire about religion), 64.63% of the population followed Roman Catholicism; 22.2% Protestantism; 2.0% Kardecist spiritism; 3.2% other religions, undeclared or undetermined; while 8.0% have no religion.