Our YOY ASM growth has slowly slowed each year for the last several years as a percentage.
In addition our delivery schedule has been reduced (deferrals) from previous announcements, so our 10ish deliveries per year represent a slowing RATE (percentage) of growth because our fleet size gets bigger each year:
10÷230=4.35% growth
10÷240=4.16%growth
10÷250=4.00%growth
And so on...
Just a few years ago we had been scheduled to take 15 Airbus deliveries this year. And last year. And next year...