Christianity is the predominant religion in New Zealand, although its society is among the most secular in the world. In the 2018 census, 44.7% of respondents identified with one or more religions, including 37.0% identifying as Christians. Another 48.5% indicated that they had no religion. Of those who affiliate with a particular Christian denomination, the main responses are Anglicanism (6.7%), Roman Catholicism (6.3%), and Presbyterianism (4.7%). The Māori-based Ringatū and Rātana religions (1.2%) are also Christian in origin. Immigration and demographic change in recent decades have contributed to the growth of minority religions, such as Hinduism (2.6%), Islam (1.3%), Buddhism (1.1%), and Sikhism (0.9%). The Auckland Region exhibited the greatest religious diversity.