Table 2. U.S. Merchandise Trade with Canada and Mexico by Surface Modes of Transportation,,,,,, (millions of dollars),,,,,, Mode,,2006,2007,2008,Percent Change 2006-2007,Percent Change 2007-2008 All Surface Modes,Imports,"434,094","452,486","464,606",4.2,2.7 ,Exports,"326,032","344,817","365,269",5.8,5.9 ,Total,"760,127","797,303","829,875",4.9,4.1 ,,,,,, Truck,Imports,"276,348","287,441","275,577",4.0,-4.1 ,Exports,"257,310","267,390","278,857",3.9,4.3 ,,,,,, Rail,Imports,"89,122","93,022","89,022",4.4,-4.3 ,Exports,"39,749","44,837","51,403",12.8,14.6 ,,,,,, Pipeline,Imports,"53,921","55,184","82,212",2.3,49.0 ,Exports,"2,887","4,122","5,564",42.8,35.0 "Source: BTS TransBorder Freight Data, http://www.bts.gov/transborder/",,,,,, "Note: The value of all surface modes is not equal to the sum of truck, rail and pipeline modes. The value of trade for all surface modes includes shipments made by truck, rail, pipeline, mail, foreign trade zones, other and unknown modes of transportation.  Numbers may not add to totals due to rounding.",,,,,, ,,,,,,