The USG Corporation + U.S. Chamber of Commerce Commercial Construction Index is a quarterly economic index designed to gauge the outlook for, and resulting confidence in, the commercial construction industry. USG Corporation and the U.S. Chamber produce this Index, along with Dodge Data & Analytics (DD&A). Each quarter, researchers from DD&A source responses from their Contractor Panel of more than 2,700 commercial construction decision-makers in order to better understand their levels of confidence in the industry and other key trends. This panel allows DD&A to provide findings that are representative of the entire U.S. construction industry by geography, size, and type of company.