Angola has a rich subsoil heritage, from diamonds, oil, gold, copper, as well as a rich wildlife (dramatically impoverished during the civil war), forest, and fossils. Since independence, oil and diamonds have been the most important economic resource. Smallholder and plantation agriculture have dramatically dropped because of the Angolan Civil War, but have begun to recover after 2002. The transformation industry that had come into existence in the late colonial period collapsed at independence, because of the exodus of most of the ethnic Portuguese population, but has begun to reemerge (with updated technologies), partly because of the influx of new Portuguese entrepreneurs. Similar developments can be verified in the service sector.
Overall, Angola's economy has undergone a period of transformation in recent years, moving from the disarray caused by a quarter century of civil war to being the fastest growing economy in Africa and one of the fastest in the world, with an average GDP growth of 20 percent between 2005 and 2007. In the period 2001–2010, Angola had the world's highest annual average GDP growth, at 11.1 percent. In 2004, China's Eximbank approved a $2 billion line of credit to Angola. The loan is being used to rebuild Angola's infrastructure, and has also limited the influence of the International Monetary Fund in the country.
The Economist reported in 2008 that diamonds and oil make up 60 percent of Angola's economy, almost all of the country's revenue and are its dominant exports. Growth is almost entirely driven by rising oil production which surpassed 1.4 million barrels per day (220,000 m/d) in late 2005 and was expected to grow to 2 million barrels per day (320,000 m/d) by 2007. Control of the oil industry is consolidated in Sonangol Group, a conglomerate which is owned by the Angolan government. In December 2006, Angola was admitted as a member of OPEC. The economy grew 18% in 2005, 26% in 2006 and 17.6% in 2007
