In all forward looking statements I’ve seen & heard, it’s been around 15%/yr growth ASM, so double every 5 to 6 years (obviously going to stop at some point). For that to continue we would mean adding about (depending on 319/320/321 ratios) 193 aircraft from 22 till 27, or 30/yr, this order adds 17/yr (25 if including options) if spread out evenly.

But you know what they say about forward looking statements.