premise: Skopje, as the Republic of Macedonia as a whole, is characterised by a large ethnic diversity. The city is located in a region where Ethnic Albanians and Macedonians meet, and it welcomed Romani, Turks, Jews and Serbs throughout its history. Skopje was mainly a Muslim city until the 19th century, when large numbers of Christians started to settle there. According to the 2002 census, Macedonians were the largest ethnic group in Skopje, with 338,358 inhabitants, or 66.75% of the population. Then came Albanians with 103,891 inhabitants (20.49%), Roma people with 23,475 (4.63%), Serbs (14,298 inhabitants), Turks (8,595), Bosniaks (7,585) and Vlachs (2,557). 8,167 people did not belong to any of these groups.
hypothesis: 4 ethnicities had less that 10000 people