Currently, Catholicism is still the single largest religion of the Netherlands with around four million registered members, 22.9% of the Dutch population in 2015. In 2006, in the Diocese of 's-Hertogenbosch (in the eastern part of North Brabant and in part of Gelderland), only 45,645 residents, mostly people over 65, attended Mass, only 2% of the total population in that area. In western North Brabant (the Diocese of Breda), the number of people associating themselves with Catholicism also strongly decreased. Church attendance is even lower in the west with only 1% of the West Brabantian population visiting churches in 2006.