Table 6. U.S. Surface Trade with Mexico by Mode of Transportation,,,,,, (millions of dollars),,,,,, Mode,,September 2007,August 2008,September 2008,Percent Change August 2008-September 2008,Percent Change September 2007-2008 All Surface Modes,Imports,"14,274","14,016","13,596",-3.0,-4.8 ,Exports,"9,843","11,448","11,427",-0.2,16.1 ,Total,"24,118","25,464","25,023",-1.7,3.8 ,,,,,, Truck,Imports,"11,367","11,410","11,285",-1.1,-0.7 ,Exports,"7,563","8,958","8,821",-1.5,16.6 ,,,,,, Rail,Imports,"2,597","2,233","1,919",-14.1,-26.1 ,Exports,"1,712","1,923","1,765",-8.2,3.1 ,,,,,, Pipeline,Imports,12,25,14,-42.1,24.1 ,Exports,67,76,299,293.8,349.0 "Source: BTS TransBorder Freight Data, http://www.bts.gov/transborder/",,,,,, "Note: 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",,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,,