Religion in the Netherlands was dominated by Christianity between the 10th and 20th centuries. In the late 19th century, roughly 60% of the population was Calvinist and 35% was Catholic. Also, until The Holocaust, there was a noticeable Jewish minority. Since World War II, there has been a significant decline in Catholic and especially Protestant Christianity, with Protestantism declining to such a degree that Catholicism became the foremost form of the Christian religion. The majority of the Dutch population is secular; however, historic societal pillarisation (verzuiling) based on religious lines continue to influence parts of Dutch society. Relatively sizable Muslim and Hindu minorities also exist.