Ghana is  a multinational state, home to a variety of ethnic, linguistic and religious groups; while the Akan are the largest ethnic group, they constitute only a plurality. The vast majority of Ghanaians are Christian (71.2%), with close to a fifth being Muslim and a tenth practising traditional faiths or reporting no religion. Ghana is a unitary constitutional democracy led by a president who is both head of state and head of government. Since 1993, it has maintained one of the freest and most stable governments on the continent, and performs relatively well in metrics of healthcare, economic growth, and human development. Ghana consequently enjoys significant influence in West Africa, and is highly integrated in international affairs, being a member of the Non-Aligned Movement, the African Union, the Economic Community of West African States (ECOWAS), the Group of 24 (G24) and the Commonwealth of Nations.