According to the 2010 Census, about 84% of Sierrans identified themselves as Christian, one of the highest percentages in the world, while 10% professed explicitly having no religious affiliation at all and less than 1% not disclosing a religion. In terms of church attendance however, only about 47% of Sierran Christians reported themselves attending on a "regular basis" with these numbers declining over the years. About 64% of Sierrans are affiliated or identified with any of the Protestant denominations or Evangelical movements, with the largest Protestant faiths by membership being the Baptists, Methodists, Seventh-day Adventists, Episcopalians, and Pentecostals. Catholics constitute over 15% of the Sierran population with the majority of Sierran Catholics being members of the Roman Cat