Table 4. U.S. Surface Transportation Trade with Canada by Mode,,,,,, "(millions of dollars) ",,,,,, ,,September 2003,August 2004,September 2004,Percent Change Aug.-Sept. 2004,Percent Change September 2003-2004 By All Modes,Imports,"18,213","20,414","20,441",0.1,12.2 ,Exports,"13,238","13,934","14,943",7.2,12.9 ,Total,"31,451","34,348","35,385",3.0,12.5 By Truck,Imports,"10,667","11,424","11,545",1.1,8.2 ,Exports,"10,606","11,129","11,861",6.6,11.8 By Rail,Imports,"4,407","5,031","5,082",1.0,15.3 ,Exports,"1,211","1,289","1,452",12.7,19.9 By Pipeline,Imports,"2,364","3,228","3,072",-4.8,29.9 ,Exports,52,33,121,264.0,131.8 "Source: BTS Transborder Surface Freight Dataset, http://www.bts.gov/transborder/",,,,,,