Table 4. U.S. Merchandise Trade with Canada by Surface Modes of Transportation,,,,,,
(millions of dollars),,,,,,
Mode,,May 2006,April 2007,May 2007,Percent Change Apr. 2007-May 2007,Percent Change May 2006-2007
All Surface Modes,Imports,"24,201","23,776","24,344",2.4,0.6
,Exports,"18,712","18,546","19,941",7.5,6.6
,Total,"42,914","42,322","44,285",4.6,3.2
,,,,,,
Truck,Imports,"13,590","12,761","13,290",4.1,-2.2
,Exports,"14,746","14,307","15,135",5.8,2.6
,,,,,,
Rail,Imports,"5,383","5,436","5,542",1.9,2.9
,Exports,"2,136","2,188","2,365",8.1,10.7
,,,,,,
Pipeline,Imports,"4,367","4,408","4,386",-0.5,0.5
,Exports,193,361,455,25.9,135.2
"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.  For additional detail refer to the TransBorder Freight Data ""Sources and Reliability"" statement: http://www.bts.gov/programs/international/transborder/tbdr; Numbers may not add to totals due to rounding.",,,,,,