Islam is Qatar's predominant religion and is the official status although not the only religion practiced in the country. Most Qatari citizens belong to the Salafi Muslim movement of Wahhabism, and between 5–15% of Muslims in Qatar follow Shia Islam with other Muslims sects being very small in number. In 2010, Qatar's population was 67.7% Muslim, 13.8% Christian, 13.8% Hindu, and 3.1% Buddhist; other religions and religiously unaffiliated people accounted for the remaining 1.6%. Sharia law is the main source of Qatari legislation according to Qatar's Constitution.