The main agricultural products of Malawi include tobacco, sugarcane, cotton, tea, corn, potatoes, sorghum, cattle and goats. The main industries are tobacco, tea and sugar processing, sawmill products, cement and consumer goods. The industrial production growth rate is estimated at 10% (2009). The country makes no significant use of natural gas. , Malawi does not import or export any electricity, but does import all its petroleum, with no production in country. Beginning in 2006, the country began mixing unleaded petrol with 10% ethanol, produced in-country at two plants, to reduce dependence on imported fuel. In 2008, Malawi began testing cars that ran solely on ethanol, and initial results are promising, and the country is continuing to increase its use of ethanol.