According to a study by the World Travel & Tourism Council (WTTC) sponsored by Accenture and prepared by Oxford Economics, the world travel and tourism market will top $13 trillion by 2017, up from $7 trillion in 2007.
Leading the way, US travel and tourism revenues are expected to reach $1.7 billion in 2007.
The study predicts that China's travel and tourism market will grow 9.6% annually through 2017, at which point it will be the second-largest travel and tourism market, surpassing current runner-up Japan.
Montenegro, China and India are the fastest-growing travel and tourism markets worldwide, with demand growing annually by 10.1%, 9.1% and 7.9%, respectively.
In a decade, the Russian Federation will move into the top 10 countries in travel and tourism.
Geoffrey Kent of the WTTC noted that travel and tourism require management, and are not to be taken for granted.
"As an industry, we must manage growth responsibly and invest now for a sustainable future," said Mr. Kent. "In addition to managing growth and profits, each organization within the Travel & Tourism sector must act as a responsible world citizen, balancing business needs with cultural, social and environmental factors."