N = Data are nonexistent p = Data are preliminary r = Data are revised U = Data are unavailable
Notes
Canada
For imports, the mode of transport information represents the last mode of transport by which the cargo was transported to the port of clearance in Canada. This may not be the mode of transport by which the cargo arrived at the Canadian port of entry if the cargo are cleared by Canadian Customs at an inland port.
Exports by land modes of transportation in this table represents Canadian trade with a second country that were transshipped via a third country, generally the United States. For exports, the mode of transport information represents the mode of transport by which the international boundary is crossed. For Canadian exports via the United States to other overseas countries, the mode reported would be the mode used to cross the Canadian/U.S. border.
In this table and for both import and export shipments, the category of Other is, for the most part, pipeline movements. Other also includes mail and parcel post and other miscellaneous modes of transport.
Mexico
The value for total trade are definitive, meanwhile data for mode of transportation are preliminary. Pipeline data are included in Other, total trade, which includes postal services and other modes.
Sources
Canada
Transport Canada. Economic Analysis Directorate, adapted from Statistics Canada International Trade Data (Ottawa, Ont.: 2008).
US/Canada Exchange Rates (Yearly average) 1990, 1995-96: International Monetary Fund. International Financial Statistics Yearbook, 2001 (Ottawa, Ont.: 2002).
US/Canada Exchange Rates (Yearly average) 1997-2007: Bank of Canada Website on Exchange rates (Ottawa, Ont.: 2008).
Mexico
Instituto Nacional de Estadística, Geografía e Informática. Dirección General de Contabilidad Nacional y Estadísticas Económicas. Based on data developed through an interagency working group including the Secretaría de Hacienda y Crédito Público, Banco de México, Secretaría de Economía and Instituto Nacional de Estadística, Geografía e Informática. (Mexico City, D.F.: various years).
United States
Total,
Air, and Water trade:
U.S. Department of Commerce. U.S.
Census Bureau. Foreign Trade Division, U.S. Exports of Merchandise CD and U.S.
Imports of Merchandise CD (Washington,
DC: various years’ December
issues).Starting 2006: U.S. Department of Commerce, U.S.
Census Bureau, Foreign Trade Statistics,
available at http://www.census.gov/foreign-trade/statistics/index.html.
Road, rail, and pipeline: U.S. Department of Transportation, Research and Innovative Technology
Administration, Bureau of Transportation Statistics, TransBorder Freight Data, available at http://www.bts.gov/itt
as of July 2008.
Other total trade: is calculated by
subtracting all modes including the value of all other modes from U.S.-NAFTA
trade from the total value of export and import of U.S. international merchandize
trade.
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