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 Consequently, the greater part of the Greeks' real property was sold at nominal value by the Turkish government. Sub-committees that operated under the framework of the Committee for Abandoned properties had undertaken the verification of persons to be exchanged in order to continue the task of selling property abandoned. The Varlık Vergisi capital gains tax imposed in 1942 on wealthy non-Muslims in Turkey also served to reduce the economic potential of ethnic Greek business people in Turkey. Furthermore, violent incidents as the Istanbul Pogrom (1955) directed primarily against the ethnic Greek community, and against the Armenian and Jewish minorities, greatly