Some manufacturing towns have done worse than others during this period of a surge in Chinese imports. Dunn, North Carolina is one of these towns. It is 40 miles south of Raleigh. In the 10 counties clustered around Raleigh factory employment declined by 40% between 1990 and 2007. Per capita cost of government payments for benefits such as unemployment insurance, food stamps, increased by 74%. Cleveland by contrast was relatively insulated and adapted to the imports by moving into areas of manufacturing that required more technology and complexity. Autor and Hanson studied 722 county clusters throughout the U.S. to discern the impact of the surge in imports and free trade.