Iraq is an oil based economy contributing nearly 95% of the country's revenues. Apart from petroleum production and refining, Iraq has a small, diversified industrial sector, including food processing and the production of chemicals, textiles, leather goods, construction materials, and metals. New industries have been started in electronic products, fertilizers, and refined sugar. Agricultural production, which employs about a third of the workforce, is not sufficient to meet the country's food requirements. Iraq's chief crops include wheat, barley, rice, vegetables, dates (Iraq is one of the world's largest producers), and cotton. Cattle and sheep are also raised. Oil is the main export and food, medicine, and manufactures the main imports. The United States, Turkey, and Syria are the chief trading partners. The business tenders from Iraq and RFP's of substation equipment are in great demand in Iraq.