The American Customer Satisfaction Index is a national economic indicator of customer evaluations of the quality of products and services available to household consumers in the United States. It is updated each quarter with new measures for different sectors of the economy replacing data from the prior year. The overall ACSI score for a given quarter factors in scores from about 200 companies in 43 industries and from government agencies over the previous four quarters. The Index is produced by the University of Michigan's Ross School of Business in partnership with the American Society for Quality and CFI Group, and is supported in part by ForeSee Results, corporate sponsor for the e-commerce and e-business measurements.
Link to resource: American Customer Satisfaction Index