Islam has been the state religion in Egypt since the amendment of the second article of the Egyptian constitution in the year 1980, before which Egypt was recognized as a secular country. The vast majority of Egyptian Muslims are Sunni, with a small Mu'tazila, Shia Twelvers and Ismailism communities making up the remainder. A significant number of Sunni Egyptians also follow native Sufi orders. Egypt hosts the most important Sunni institution in the world, Al-Azhar University. It is the oldest Islamic institution of higher studies (founded around 970 CE), and is considered by many to be the oldest extant university in the world.