Demographics of Turkey are available for the Kurdish population, because the Turkish government has outlawed ethnic or racial censuses. An estimate by the CIA World Factbook places their proportion of the population at approximately 18%. Another estimate, according to Ibrahim Sirkeci, an ethnic Turk, in his book "The Environment of Insecurity in Turkey and the Emigration of Turkish Kurds to Germany", based on the 1990 Turkish Census and 1993 Turkish Demographic Health Survey, is 17.8%. Other estimates include 15.7% of the population according to the newspaper "Milliyet", and 23% by Kurdologist David McDowall. The Minority Rights Group report of 1985 (by Martin Short
Dinka people cash crops. The food crops are grains, mainly sorghum and millet. The cash crops include groundnuts, sesame and gum-arabic. Cattle are confined to riversides, the Sudd and grass areas during the dry season, but are taken to high grounds in order to avoid floods and water during the rainy season. They number around 4.5 million people according to the 2008 Sudan census, constituting about 18% of the population of the entire country, and the largest ethnic tribe in South Sudan. Dinka, or as they refer to themselves, "Muonyjang" (singular) and "jieng" (plural), make up one of the branches of the