Sorry if old news (last month) but a few of the releases from the official JSF source show the hours really building fast:
http://www.jsf.mil/news/docs/20160210_Hours.pdf
A few things stuck out:
155 jets delivered.
12 flying locations.
Lt. Col. Hayden the first to get 500 hours on type.
F-35 fleet passed 50,000 hours in February. It took 6+ years to pass 25,000 hours, but only 14 months to get the second 25,000 hours.
Yes I understand the cost and problems, the inertia just stood out to me.