I don't have the stats, but I have a bit over 1000 hours as a pilot of light aircraft.

"What's it doing now?" is a common question in the industry, and the subject of this excellent American Airlines training seminar video: https://www.youtube.com/watch?v=pN41LvuSz10&t=21m41s

(The whole video is good, but that's the specific automation confusion question.)