Oprah Winfrey becomes the first female African-American billionaire.
Sat on Turkcell board from until May
Son-in-law of Koc Holding founder Vehbi Koc, Inan Kirac has worked as a high-level executive in different parts of the holding company for many years.
Retrieved 27 December
Inthere was a record of 2, people on the list, that included newcomers mostly from China and the U.
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At 83 he announced that he plans to work for another 20 years.