Table 4. U.S. Merchandise Trade with Canada by Surface Modes of Transportation,,,,,, (millions of dollars),,,,,, Mode,,July,June,July,Percent Change June -,Percent Change July 2004-2005 ,,2004,2005,2005,July, All Surface Modes,Imports,"18,148","22,097","18,778",-15,3.5 ,Exports,"12,219","16,961","13,040",-23.1,6.7 ,Total,"30,368","39,058","31,817",-18.5,4.8 ,,,,,, Truck,Imports,"9,956","12,601","10,013",-20.5,0.6 ,Exports,"9,528","13,416","10,264",-23.5,7.7 ,,,,,, Rail,Imports,"3,904","4,757","4,029",-15.3,3.2 ,Exports,"1,113","1,556","1,138",-26.9,2.2 ,,,,,, Pipeline,Imports,"3,181","3,792","3,624",-4.4,13.9 ,Exports,241,149,154,3.3,-36 "Source: BTS Transborder Surface Freight Dataset, 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.  For additional detail refer to the Transborder Surface Freight data ""Sources and Reliability"" statement: http://www.bts.gov/ntda/tbscd/srfin.html",,,,,,