I don't have any statistics to see how often...or what guidelines the IC has given herself. As to how to use this power, I have a sense—and it's an opinion—that she's acted in a timid fashion, maybe as she should, so that people could begin to understand. Basically, using a power is the last club she has.
How often she's used it.... Are there some specific institutions that have been targeted more than others and some specific sections of the act, such as section 20? I don't know, and her report doesn't provide us with this kind of information. I wish it did.