Forward-looking bookings and searches for business travel appear to be rising, leading to a strong business Leading Travel Index, the forecasting portion of the U.S. Travel Association’s Travel Trends Index.

ALL TRAVEL TO and inside the U.S. grew 3.6 percent year-over-year in April, according to the U.S. Travel Association’s most recent Travel Trends Index. That made 100 consecutive months of overall expansion, but the U.S. still trailed other nations in attracting international travelers.

USTA forecasts domestic travel overall to increase by an average of 2.4 percent through October, including domestic business travel which saw its fourth month of growth in April, the first four-month upswing since the same time in 2015. Bookings and searches for future business travel also appeared to be on the rise.

While international travel also is expected to rise 3 percent in the same period by October, USTA said rising oil prices and increased trade tensions may take a toll on the industry. Also, the U.S. is behind markets like Germany, France, China and the United Kingdom in its share of the international travel market.

“While travel overall is relatively healthy, particularly domestic business travel, the U.S. travel industry continues to register concern over a declining share of the global travel market,” said USTA Senior Vice President for research David Huether. “Business confidence was soft earlier in the economic recovery, but now we’re seeing a resurgence that is attributable in part to the recent tax cuts and a more favorable regulatory environment.”