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
Population exchange between Greece and Turkey of 3 million within the present borders of Turkey was actually 4.3 million of the 17.5 million total. Christians were actually close to 25% of the population in 1912, not 18.9% as reported. There were 8.5 million people in the Ottoman governed Arabic-speaking regions of the Levant and Arabia of whom 1.6 million were Christian giving the total number of Christians in the Empire as just short of 5.8-6 million or slightly less than 23%. By 1924 the Christian population of Turkey proper had been reduced from 4.2 million in 1912 to 700,000 (50% of the pre-War Christians had been