|Buffalo-Niagara Falls, NY||16,532|
|Sault Ste. Marie, MI||5,766|
|Port Huron, MI||4,309|
|El Paso, TX||46,397|
|San Ysidro, CA||33,593|
SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, special tabulation, August 2000, based on U.S. Department of Treasury, U.S. Customs Service, Office of Field Operations, Operations Management Database, 1999.