NOTE: Overnight travel includes trips of at least one night or longer. Data for Canada and Mexico do not include same-day travel.

SOURCES: U.S. Department of Commerce, International Trade Administration, Office of Tourism Industries, "International Visitors (Inbound) and U.S. Residents (Outbound) (1990–2000)," and "Arrivals to the U.S. 1999 & 1998 (All Countries by Residency), and in Rank Order within Region," available at http://tinet.ita.doc.gov as of Aug. 3, 2001.