Figure 12,,,,,,, "Value Per Ton of Shipments by Shipment Size: 1993, 1997, 2002 * (Commodity Flow Survey Data Only) (dollars) ",,,,,,, Shipment Size,Year,,,,,, ,1993,1997,2002,,,, Less than 500 lb,"12,498","15,548","18,600",,,, 500 to 999 lb,"4,934","5,228","5,892",,,, "1,000 to 49,999 lb",891,821,993,,,, "50,000 lb or more",132,147,156,,,, All shipment sizes,603,626,733,,,, " KEY: * 2002 data are preliminary.",,,,,,, "SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, based on data from the preliminary 2002 Commodity Flow Survey data, January 2004.",,,,,,,