From Booknet Canada:
Audiobook and hardcover purchases have remained fairly flat. In 2016, audiobook purchases made up, on average, 2.6% of total book purchases while in 2015 it was 2.2%. Hardcover book purchases accounted for 24.2% in 2015 and went down only slightly to 23.9% in 2016.
Paperbacks and ebooks had marginally more movement. On average in 2015, ebooks made up 19.0% of total book purchases and in 2016 the average share of ebooks fell to 16.9%. On the flip-side, paperback purchases were up from an average of 51.1% of purchases in 2015 to an average of 54.2% in 2016.