Ghana's population is estimated at 20 million, roughly ten per cent of whom reside in and around the capital city of Accra. Other major urban centres include Kumasi, Tamale, Tema, Takoradi and Cape Coast. More than 70 languages and major dialects are spoken countrywide, classified in four linguistic groups namely; Akan, Mole-Dagbani, Ewe and Ga. The most widespread Akan language is Twi, which is spoken by roughly half the population, including the Asante and the coastal Fante. The official language spoken is English. Two-thirds of Ghanaians are Christians, another 15% are Islamic and the remainder adhere to traditional animist beliefs. Ghanaians are generally very pleasant, friendly, polite and helpful.