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
Ethnic groups in Chad largest single group in Chad) are the Sara, about 30 percent of the population. They live in the valleys of the Chari and Logone rivers and are farmers of considerable skill. Others include the Ngambaye, Mbaye, Goulaye, Moundang, Moussei, and Massa. Ethno-linguistically, the groups may be divided into: Ethnic groups in Chad The population of Chad has numerous ethnic groups. SIL Ethnologue reports more than 130 distinct languages spoken in Chad. The 14 million Chad people belong to some 200 ethnicities, who speak numerous languages. The southern part of the country was historically the cross roads of the caravan routes