I would have difficulty answering that question based solely on my personal point of view.
In the context of my mandate, I would say that, when it comes to providing information to my office, only few departments have problems with transparency.
My colleague Ms. Maynard, the Information Commissioner, would probably give you a completely different answer.
Since this issue can be looked at from a number of different angles, I will stick to what I know and to the information provided to me by the departments. Those who do not provide me with the information I need in a timely manner are in the minority.