The Commodity Flow Survey (CFS), undertaken through a partnership between the Census Bureau and the Bureau of Transportation Statistics (BTS) is conducted every 5 years (years ending in "2" and "7") as part of the Economic Census. The CFS produces data on the movement of goods in the United States. It provides information on commodities shipped, their value, weight, and mode of transportation, as well as the origin and destination of shipments of commodities from manufacturing, mining, wholesale, and selected retail and services establishments.
On May 17, 2012, data revisions were made to the 2007 CFS Geographic Area Series' table 30 and 31. The links can be found on the 2007 Economic Census: Data Revisions