Table 2. U.S. Surface Trade with Canada and Mexico by Mode of Transportation,,,,,, (millions of dollars),,,,,, Mode,,March 2007,February 2008,March 2008,Percent Change Feb. 2008-Mar. 2008,Percent Change March 2007-2008 All Surface Modes,Imports,"39,912","39,533","40,089",1.4,0.4 ,Exports,"29,856","29,874","30,698",2.8,2.8 ,Total,"69,768","69,406","70,787",2.0,1.5 ,,,,,, Truck,Imports,"25,910","24,013","23,835",-0.7,-8.0 ,Exports,"23,191","22,522","23,353",3.7,0.7 ,,,,,, Rail,Imports,"8,465","7,524","8,065",7.2,-4.7 ,Exports,"4,018","4,257","4,281",0.6,6.5 ,,,,,, Pipeline,Imports,"4,313","6,738","6,657",-1.2,54.4 ,Exports,271,354,NA,NA,NA "Source: BTS TransBorder Freight Data, http://www.bts.gov/transborder/",,,,,, "Notes: Numbers may not add to totals due to rounding. Percent changes based on numbers prior to rounding. The value of trade for all surface modes is not equal to the sum of truck, rail and pipeline modes, it also includes shipments made by mail, foreign trade zones, other and unknown modes of transportation.  For additional detail refer to the “Data Fields” Section of the TransBorder web page: http://www.bts.gov/transborder/TBDR_DataFields.html. ",,,,,, Canada pipeline export data are currently not available for March 2008. NA = Not Available,,,,,, ,,,,,, ,,,,,, ,,,,,,