 The plains of Low Dauphiné and the large cities saw their population strongly increase during the 20th century (thanks to the industrial development and immigrant workers' arrival), while the mountainous regions of High-Dauphiné suffered from a pronounced exodus.These days, the entire territory is experiencing population growth because of economic development and tourism.The population of the Dauphiné was relatively stable until the mid-20th century, when growth became more rapid.