There are around 35,000 Catholics, constituting 0.05% of the population. The faithful follow the Latin, Byzantine, Armenian and Chaldean Rite. Most Latin Rite Catholics are Levantines of mainly Italian or French background, although a few are ethnic Turks (who are usually converts via marriage to Levantines or other non-Turkish Catholics). Byzantine, Armenian, and Chaldean rite Catholics are generally members of the Greek, Armenian, and Assyrian minority groups respectively. Turkey's Catholics are concentrated in Istanbul.