Trips of one or more nights
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); _____. Select Destinations Visited by U.S. Resident Travelers 1999–1998 (Washington, DC: 2000).