Rwanda is a country of few natural resources, and the economy is heavily dependent on subsistence agriculture, with an estimated of the working population engaged in farming. Under Kagame's presidency, the service sector has grown strongly. In 2010, it became the country's largest sector by economic output, contributing of the country's GDP. Key tertiary contributors include banking and finance, wholesale and retail trade, hotels and restaurants, transport, storage, communication, insurance, real estate, business services, and public administration, including education and health. Information and communications technology (ICT) is a Vision 2020 priority, with a goal of transforming Rwanda into an ICT hub for Africa. To this end, the government has completed a fibre-optic telecommunications network, intended to provide broadband services and facilitate electronic commerce. Tourism is one of the fastest-growing economic resources and became the country's leading foreign exchange earner in 2011. Achievement of physical security in the aftermath of genocide means that the country is increasingly perceived internationally as a safe destination; in the first half of 2011, of foreign visitors arrived from outside Africa.