According to the 2003 national census, 80.3% of the population was Christian (51.4% Protestant and 28.9% Roman Catholic), 10% was Muslim and 4.5 percent other religious groups, with 5.5 percent having no religious beliefs. More recent work from the Pew Research Center estimated that, as of 2010, Christians constituted 89.8% of the population (60.7% Protestant and 28.5% Catholic) while Muslims made up 8.9%. The Catholic Church claims over 1.5 million adherents, approximately one-third of the population. Indigenous belief (animism) is also practiced, and many indigenous beliefs are incorporated into Christian and Islamic practice. A UN director described religious tensions between Muslims and Christians as being high.