Charlotte Douglas International Airport posted a decline in passenger traffic last year for the first time since 2009.

Passenger numbers dropped 1% when compared to 2015, the airport announced on Tuesday in a year-end report. About 44.4 million passengers passed through Charlotte Douglas in 2016 — down from nearly 44.9 million served the previous year. CLT officials attributed the decline mainly to a trend of lower airline load factors (percentage of seats sold) happening at several larger U.S.…