In 2003, exports of nonmetals increased by 25% and accounted for 38% of all export earnings, previously 35%. The Zambian government has recently been granting licenses to international resource companies to prospect for minerals such as nickel, tin, copper, and uranium. The government of Zambia hopes that nickel will take over from copper as the country's top metallic export. In 2009, Zambia was badly hit by the world economic crisis.