Islam has a long, continuous history in Lebanon. A substantial portion of the Lebanese population is Muslim, probably representing a majority of the population, although the precise percentage is difficult to ascertain. The Lebanese constitution officially guarantees freedom of religion for government-registered religions, including five denominations of Islam, although a blasphemy law and restrictions on religious groups that "disturb the public order" exist as well. Under the Taif Agreement, Muslims are allocated proportional representation across multiple governmental positions. The Lebanese Druze community are sometimes counted as a branch of Islam within Lebanon, though most Druze followers do not consider themselves Muslim and do not follow the Five Pillars of Islam.