Trade has driven much of the growth in Africa's economy in the early 21st century. China and India are increasingly important trade partners. Because Africa』s export portfolio remains predominantly based on raw material, its export earnings are contingent on commodity price fluctuations. Increased investment in African agricultural technology in general has the potential to reduce poverty in Africa. The demand market for African cocoa has experienced a price boom in 2008. The African Union has plans to heavily invest in African agriculture and the situation is closely monitored by the UN. Petroleum and petroleum products are the main export of 14 African countries.