What is a question about this article? If the question is unanswerable, say "unanswerable".

There is a sizeable Greek minority of about 105,000 (disputed, sources claim higher) people, in Albania. The Greek minority of Turkey, which numbered upwards of 200,000 people after the 1923 exchange, has now dwindled to a few thousand, after the 1955 Constantinople Pogrom and other state sponsored violence and discrimination. This effectively ended, though not entirely, the three-thousand-year-old presence of Hellenism in Asia Minor. There are smaller Greek minorities in the rest of the Balkan countries, the Levant and the Black Sea states, remnants of the Old Greek Diaspora (pre-19th century).

What acts have caused the population of Greeks to be numbered so few in the country who name is reminiscent of a big American holiday?
1955 Constantinople Pogrom and other state sponsored violence and discrimination.