In the years following independence, the population of the metropolitan area continued to grow: by 21.1% from 1956 to 1966 and by 28.5% from 1966 to 1975 (55.6% between 1956 and 1975). This steady growth was accompanied by changes that affected the nature of the settlement of the capital. Decolonization led to the exodus of some European minorities whose numbers dwindled every year. The gaps created by their departure were filled by Tunisians who emigrated to Tunis from other parts of the country.