You have very good questions. Unfortunately, until we actually do a further study on this and see exactly what we can find in the data from the CRA, it will be very hard to answer your questions and say exactly what the conclusion will be. We know that there is a tax gap, no doubt. Knowing how big it is will have to wait until we have a better analysis of the data that we have.
On April 23rd, 2018. See this statement in context.