There's no provision for Junior Manning.
All numbers below are based upon into day off extensions. They don't include same day extensions or extensions into next trip.
July - 40
June - 10
May - 29
April - 17
They no longer publish up to date stats on the website.
Extensions feel more common than the company makes it out to be (especially into same day extensions).
The real problem is that the company isn't so much extending pilots as they remove the pilot from their trip and put them on another which ends later in the same day. I don't know if they are counting these as into same day extensions or not.