Business travel is largely carrying the health of the domestic travel industry, according to a new report from the U.S. Travel Association. The survey found that all travel segments grew in December but an acceleration in domestic business and leisure travel more than offset a modest deceleration in international inbound travel. David Huether, senior vice president, research, said that with all 12 months’ data now in for 2018, the association’s Travel Trends Index shows that travel to and within the US grew faster in 2018 than in 2017. While international and domestic leisure growth was steady, he said, “the most impressive news is that business travel had its best year since 2010.” The Current Travel Index (CTI) shows the industry overall nearing its 10th consecutive year of expansion. Huether cautioned that "a projected global economic cooling and persistent trade tensions will continue to threaten international inbound travel growth."