I don't think that many members of the CEWIL community or post-secondary institutions are explicitly tracking which of their students are receiving summer jobs or the employers who are receiving the stipend. I'm not aware, personally, of any line of sight that would offer that insight. If it did exist, it would likely be more localized to individual academic institutions. It wouldn't be information that CEWIL would be collecting or asking for.
I'm afraid I can't answer that question for you directly, but thank you.