Under the constitution, the Eastern Orthodox Church of Christ is the "prevailing" religion of Greece, but religious freedom is guaranteed. The church is self-governing under the ecumenical patriarch resident in Istanbul, Turkey, and is protected by the government, which pays the salaries of the Orthodox clergy. The government does not keep statistics on membership in religious groups; however, it is estimated that about 97% of the population are nominally members of the Eastern Orthodox Church. Official estimates place the number of Muslims at about 98,000 people, with most living in Thrace. Jehovah's Witnesses and the Roman Catholic Church each have about 50,000 members. There are about 30,000 Protestants, 12,000 Scientologists, and 5,000 Jews. There is a very small Baha'i community. The constitution prohibits proselytizing.