 According to the 2003 national census, 80.3% of the population was Christian—51.4% Protestant and 28.9% Roman Catholic—, 10% is 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 (with Protestantism at 60.7% and Catholicism 28.5%) while Muslims make up 8.9%.The Catholic Church claims over 1.5 million adherents, approximately one-third of the population.