NOTE: 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 (Washington, DC: 2001); _____. Arrivals to the U.S. 1999–1998 (All
Countries by Residency) (Washington, DC: 2000).