The 2007 census found that Christians made up 59.2% of Mozambique's population and Muslims comprised 18.9% of the population. 7.3% of the people held other beliefs, mainly animism, and 13.9% had no religious beliefs. A more recent government survey conducted by the Demographic and Health Surveys Program in 2015 indicated that Catholicism had increased to 30.5% of the population, Muslims constituted 19.3%, and various Protestant groups a total of 44%. According to 2018 estimates from the United States Commission on International Religious Freedom, 28% of the population is Catholic, 18% are Muslim (mostly Sunni), 15% are Zionist Christians, 12% are Protestants, 7% are members of other religious groups, and 18% have no religion.