 Although the term has been used in various times to refer to fleeing populations of Greek descent (primarily after the Ionian Revolt, the Fall of Constantinople or the Greek Civil War), the population strength and the influence of the Asia Minor Greeks in Greece itself, has attached the term to the Anatolian Greek population of the early 20th century.At least 300,000 Greek refugees were from Eastern Thrace, whereas at least 900,000 were from Asia Minor.At least 150,000 were from Istanbul, who left the city in three years before 1928.