Temporary and permanent crops are actively cultivated on an estimated 7,000 hectares (17,300 acres), which represent 1.3% of total land area. Agriculture accounts for 5% of GDP and employs some 2% of the work force. Rice production is low (only about 1,000 tons per year), and Brunei imports more than 80% of its requirements. Urban migration and more profitable jobs in the oil industry have led to a shortage in farm labor. An agricultural training center, sponsored by Brunei Shell and the Department of Agriculture, was established in 1978 to encourage young people to return to the land. Crops for home consumption include bananas, sweet potatoes, cassava, coconuts, pineapples, and vegetables.