According to the church administration, in 2010 two dioceses – 's-Hertogenbosch and Roermond – still had a majority of Catholics in the population. It is notable that SILA (Stichting Interkerkelijke Ledenadministratie) published precisely for these two dioceses a significantly lower number of Catholics in 2005. Based on the SILA-numbers, in the diocese of Hertogenbosch in 2010 the population has no longer a Catholic majority. KASKI (Katholiek Sociaal-Kerkelijk Insituut / Catholic Social-Ecclesiastical Institute) found 23.3% of the population to be nominal Catholic in 2014, based on registration by the Catholic church. These numbers are significantly higher than the numbers of Catholic adherence found by Radboud University and Vrije Universiteit Amsterdam (11.7% Catholic in 2015). This shows a big disconnect between membership and actual adherence. Especially the Catholic Church often claims that a quarter of the Dutch population is Catholic, pointing to the official statistics, but when questioned, fewer than half that number associate themselves with the Catholic faith. A lot of people still registered as members of a church are actually not religious (anymore), but for various reasons have not officially renounced their membership (yet) – a phenomenon known as 'belonging without believing'.