We're looking at book sales like it's been put in previous testimony: you can't compare the average author to a J.K. Rowling, for example, who is selling millions of books around the world. These book sales are reflecting all books from all authors, including bestsellers. The percentage that is educational books is probably a very small margin as part of the overall book sales market in Canada.
On May 22nd, 2018. See this statement in context.