Figure 2-51 Freight Shipments by Value and Tonnage: 1977, 1993 , and 1997

Figure 2-51
Freight Shipments by Value and Tonnage: 1977, 1993 , and 1997

Figure 2-51. Freight Shipments by Value and Tonnage: 1977, 1993 , and 1997. If you are a user with a disability and cannot view this image, please call 800-853-1351 or email answers@bts.gov for further assistance.

Note: 1977 data limited to primary shipments of manufactured goods.

Source: U.S. Department of Transportation, Bureau of Transportation Statistics, Commodity Flow Survey data (Washington, DC: Various years); and U.S. Department of Commerce, Census Bureau, Commodity Flow Survey data (Washington, DC: Various years).