With all this activity a modern city has grown with a university and other major amenities. About 50% of the population of the province is younger than 24 years of age. 68% were born in Mersin. The literacy rate is 89%. About 43% of the male population and about 27% of the female population graduated from middle school. Infant mortality is 0.48%. Urban population growth rate is 2.42%. Population density is 117. Mersin does not have the huge volume of tourists enjoyed by neighbouring Antalya or the Aegean coast, but Turkish people do come to this coast, especially now that the hotels have air-conditioning, and perhaps more to the mountain country behind where there are healing mineral water springs. In summer the hills are a popular retreat from the high humidity and extreme heat on the coast. West of Mersin includes bays, and little islands. Yacht touring is a tourism income in these areas. In antiquity this coast was part of Cilicia, named for a Phoenician or Assyrian prince that had settled here. Trade from Syria and Mesopotamia over the mountains to central Anatolia passed through here, through the Cilician Gates. The geographer Strabo, described the region as being divided into "Rugged Cilicia" ("Cilicia Trachea", Κιλικία Τραχεία in Greek) and "Flat Cilicia" ("Cilicia Pedias", Κιλικία Πεδιάς). The capital of both sections of Cilicia was Tarsus and Mersin was its seaport. Mersin province is divided into thirteen districts four of which are actually included within the municipality of Mersin city (shown in boldface letters).