In 2015, Statistics Netherlands, the government institute that gathers statistical information about the Netherlands, found that 50.1% of the adult population declared no religious affiliation. Christians comprised 43.8% of the total population; by denomination, Catholicism was 23.7%, the members of the Protestant Church of the Netherlands were 15.5%, and members of other Christian denominations were 4.6%. Islam comprised 4.9% of the total population, Hinduism 0.6%, Buddhism 0.4%, and Judaism 0.1%. Many Dutch people believe religion should not have a significant role in politics and education. Religion is also primarily considered a personal matter which should not be discussed in public.