Economy of Cambodia is on the road toward sustainable development. Cambodia's economy has been based traditionally on agriculture. However two of Cambodia's industries that have helped Cambodia move ahead are the tourism industry and the garment industry. Cambodia experienced strong macroeconomic stability and significant improvement in standards of living. Real economic growth was 7% in 2008. Mineral resources are not abundant, but phosphate rock, limestone, semiprecious stones, and salt support important local mining operations. Clothing, timber, rubber, rice, fish, tobacco, and footwear are the main exports; petroleum products, cigarettes, gold, construction materials, machinery, motor vehicles, and pharmaceuticals are the main imports. The chief trade partners are the United States, Hong Kong, China, and France.