 These communities today are significantly decreased due to the population exchanges between Greece and Bulgaria which were directed under the Treaty of Neuilly in 1919.In 1900, Greeks were about 80,000 (2% of the Bulgarian population) and despite its small size the minority was prominent in the commercial activities and visible in the cultural life.According to the 2001 census, there were 35,104 Bulgarian citizens in Greece, constituting 4,7% of all foreigners in Greece.