History of religion in the Netherlands decreased from approximately 7,013,163 (43.22% overall population) in 2003 to 5,730,852 (34.15% overall population) in 2013. An additional 4.2% of the population adhere to other Protestant churches. With only 32.2% of the Dutch currently adhering to a religion, among which 25% adhere to Christianity and 5% to Islam, the Netherlands is one of the least religious countries of Europe. During the late 20th century, the Dutch policy on abortion, drug use, euthanasia, homosexuality and prostitution became very liberal. As a result of the declining religious adherence, the two major strands of Calvinism, the Dutch Reformed Church and the Reformed Churches
History of religion in the Netherlands of the popular politician Pim Fortuyn, who sought to defend the Dutch liberal culture against what he saw as a "backward religion", stricter immigration laws were enacted. Religious tensions heightened after Theo van Gogh was killed in 2004 by Mohammed Bouyeri, a conservative Muslim. A December 2014 survey by the VU University Amsterdam concluded that for the first time, there were more atheists (25%) than theists (17%) in the Netherlands. The majority of the population being agnostic (31%) or ietsistic (27%). In the 21st century, a large majority of the Dutch population believes that religion should not play a decisive