Islam is the official religion forming 70.2% of the population. Current census data does not differentiate between the other religions in Bahrain, but there are about 1,000 Christian citizens and about 40 Jewish citizens. Muslims belong to the Shi'a and Sunni branches of Islam. There are no official figures, but the Shi'a constitute 60-70% of the Bahraini Muslim population. Foreigners, overwhelmingly from South Asia and other Arab countries, constituted 54% of the population in 2010. Of these, 45% are Muslim and 55% are non-Muslim, including Christians , Hindus, Bahá'ís, Buddhists, and Sikhs.
Question: How many different religion groups of the population are non Muslim?
Answer: 5