Same-sex union legislation legislation of unregistered cohabitation was introduced in the Netherlands in June 1979. However, the first substantial recognition of same-sex couples didn't occur before the introduction of a new legal form, that of registered partnerships, which was first enacted in Denmark in June 1989. Many countries have followed with similar legislation since then. Legislation of these forms of legal unions still occur with a variety of different names, even after the introduction of same sex marriage, although sometimes they are overwritten by subsequent legislation of same-sex marriage. There are currently seventeen countries that have an alternative form of legal recognition other
Same-sex marriage in Belgium 2000 to 2014, 698,395 people had reported being in a statutory cohabitation, with that number heavily increasing over the years. 35% of these cohabitations, however, had ended by 2014. In 2014, 3.2% of all statutory cohabitations were between same-sex couples. In the late 1990s, gay rights organisations in Belgium lobbied for the legalization of same-sex marriage. Belgian civil law did not explicitly require that two people be of opposite gender to be able to marry, as this was considered self-evident. Private member's bills in the 1990s by Vlaams Blok senators to add this as an explicit requirement were never considered.