Nations and Peoples Organization (UNPO) since 1991. Distribution In the Ukrainian census of 2001, 248,200 Ukrainian citizens identified themselves as Crimean Tatars with 98% (or about 243,400) of them living in the Autonomous Republic of Crimea. An additional 1,800 (or about 0.7%) lived in the city of Sevastopol, also on the Crimean peninsula, but outside the border of the autonomous republic. About 150,000 remain in exile in Central Asia, mainly in Uzbekistan. The official number of Crimean Tatars in Turkey is 150,000 with some Crimean Tatar activists estimating a figure as high as 6 million. The activists reached this number by taking one million Tatar immigrants to Turkey as a starting point and multiplying this number by the birth rate in the span of the last hundred years. Crimean Tatars in Turkey mostly live in Eskişehir Province, descendants of those who emigrated in the late 18th, 19th and early 20th centuries. The Dobruja region of Romania and Bulgaria is home to more than 27,000 Crimean Tatars, with the majority in Romania and approximately 3,000 on the Bulgarian side of the border. Sub-ethnic groups The Crimean Tatars are subdivided into three sub-ethnic groups: the Tats (not to be confused with the Iranic Tat people, living in the Caucasus region) who used to inhabit the mountainous Crimea before 1944 predominantly are Cumans, Greeks, Goths and other people, as Tats in Crimea also were called Hellenic Urum people (Greeks settled in Crimea) who were deported by the Imperial Russia to the area around Mariupol; The term Tat appears already in the 8th century Orkhon inscriptions denoting "a subjected foreign people". In the 17th century Crimean context, it probably denoted various peoples of foreign (ie. non-Turkic) origin living under the khan's rule, especially the Greeks, Italians, and the remnants of Goths and Alans inhabiting the mountainous southern section of Crimea. the Yaliboylu who lived on the Southern Coast of the peninsula before 1944 and practiced Christianity until the 14th century; the Noğays (not to be confused with related Nogai people, living now in Southern Russia) — former inhabitants of the Crimean steppe. Historians suggest that inhabitants of the mountainous parts of Crimea lying to the central and southern parts (the Tats), and those of the Southern coast of Crimea (the Yalıboyu) were the direct descendants of the Pontic Greeks, Armenians, Scythians, Ostrogoths (Crimean Goths) and Kipchaks along with the Cumans while the latest inhabitants