The Economy of Angola is one of the fastest-growing in the world, with reported annual average GDP growth of 11.1 percent from 2001 to 2010. It is still recovering from the Angolan Civil War that plagued the country from its independence in 1975 until 2002. Despite extensive oil and gas resources, diamonds, hydroelectric potential, and rich agricultural land, Angola remains poor, and a third of the population relies on subsistence agriculture. Since 2002, when the 27-year civil war ended, the nation has worked to repair and improve ravaged infrastructure and weakened political and social institutions. High international oil prices and rising oil production have contributed to the very strong economic growth since 1998, but corruption and public-sector mismanagement remain, particularly in