Table 4,,,,,
U.S. Merchandise Trade with Canada and Mexico by Mode: 2000,,,,,
,,,,,
Mode,Value (percent),,Weight (percent),,
"NAFTA trade, total",100.0,,100.0,,
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 ,,
,,,,,
"U.S.-NAFTA imports, total",100.0,,100.0,,
Truck, 59.3 ,, 25.7 ,,
Rail, 19.4 ,, 19.8 ,,
Pipeline, 6.3 ,, 20.5 ,,
Air, 4.9 ,, 0.1 ,,
Water, 6.4 ,, 33.9 ,,
Other and unknown, 3.7 ,, 0.1 ,,

"U.S.-NAFTA exports, total",100.0,,100.0,,
Truck, 73.6 ,, 55.7 ,,
Rail, 8.1 ,, 12.3 ,,
Pipeline, 0.2 ,, 2.3 ,,
Air, 9.3 ,, 0.4 ,,
Water, 3.2 ,, 29.2 ,,
Other and unknown, 5.5 ,, 0.2 ,,

"SOURCES: U.S. Department of Transportation, Bureau of Transportation    ",,,,,
"Statistics, June 2001; based on: total, water and air data—U.S. Depart-",,,,,
"ment of Commerce, U.S. Census Bureau, Foreign Trade Division, U.S.",,,,,
"Exports of Merchandise CD and U.S. Imports of Merchandise CD,",,,,,
"December 2000; truck, rail, pipeline, other and unknown data—U.S. "
"Department of Transportation, Bureau of Transportation Statistics, Trans-"
"border Surface Freight Data, 2000; and special tabulations."