Tourists photograph the sunset at the summit of Cadillac Mountain in Acadia National Park near Bar Harbor, Maine. Credit: Robert F. Bukaty | AP

Acadia National Park is on track to equal last year’s record-setting 3.3 million visitors, a park spokesman said Friday.

An estimated 2,341,198 people had visited the park in 2017 as of the end of August, according to statistics compiled by the National Park Service. That’s 89,788 visitors ahead of the total for the same period in 2016.

Those numbers, for the first time, include traffic that comes from Island Explorer, a free shuttle service for Bar Harbor and Acadia, Park spokeswoman Christie Anastasia said.

As of last month, an estimated 115,117 park visitors came from the shuttle service so far this year, according to the statistics.

Those numbers are expected to rise when officials count fall visitors who come to see the foliage.

Mount Desert Island has about 10,000 year-round residents.