One in the summer term, and I think we had six this past winter term. The reason was that the content is available online now. We've purchased licences to access the content in those course packs. For instance, instead of putting together a course pack full of journal articles, we simply put direct links in our electronic reserve system and the students access them that way. Instead of copying chapters from books and compiling them in a course pack, we have e-books online.
On May 9th, 2018. See this statement in context.