The aforementioned sub-groups consist of several categories. The first group, citizens, can further be differentiated into skilled laborers and white-collar workers, Turkish soldiers and their close families, farmers who have settled in Cyprus and individual migrants.[10] The non-citizens can be divided into students and academic staff, tourists, workers with permits and illegitimate workers lacking permits.[11] Farmers settled from Turkey between 1975 and 1977 constitute the majority of the settler population.[8]