Data for Figure 4,,,,
Modal Shares of U.S. NAFTA-Partner Merchandise Trade by Value and Weight: 2000,,,,
,,,,
Mode,Modal Shares (Percent),,,
,Value,Weight,,
Truck,65.6,35.1,,
Rail,14.4,17.4,,
Pipeline,3.6,14.8,,
Air,6.9,0.2,,
Water,5.0,32.4,,
Other and unknown,4.5,0.1,,
Total , 100 , 100 ,,
,,,,
"SOURCES: U.S. Department of Transportation, Bureau of Transportation Statistics, special tabulation, April   ",,,,
"2001; based on: total trade, air and water—U.S. Department of Commerce, U.S. Census Bureau, Foreign Trade ",,,,
"Division, FT920 U.S. Merchandise Trade (Washington, DC: Various years); all land modes—U.S. Department",,,,
"of Transportation, Bureau of Transportation Statistics, Transborder Surface Freight Data."