If you ratio 12 months for the year divided by these first 5 months (thru May) you get projected:

278 flights in 2017 vs. 256 flights in 2016. An 8% increase.

30,691 passengers in 2017 vs. 27,391 passengers in 2016. A 12% increase.

This runs completely counter to your statement. Thank you for providing data to show you are mistaken.