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Average cost of domestic airfare in 2006, an increase of 7 percent over 2005 $231
Number of international visitors who came to the U.S. in 2006 51.1 million
Percent of Americans who don't know that they need a passport to re-enter the country 56
Number of proposed hotel rooms stuck in the planning stage 313,113
Number of exhibitors at the National Restaurant Association convention in Chicago, a record for the event 2,140
Sources (from left): Business Travel Monitor, U.S. Department of Commerce, Travel Industry Association, PKF Hospitality Research, Chicago Convention and Tourism Bureau
