I'll take that again, Madam Chair, but I will ask my colleague, Frank Vermaeten or one of the others, to respond.
We feel quite confident that we have good outreach and education to make people aware of these benefits, the Canada child benefit being one, but it is an ongoing challenge. We try to make sure we're improving the awareness so that people file returns and become eligible for these benefits.
Whether it's in vulnerable communities or what have you, we know there are some people out there who aren't filing to get the benefits. We have an ongoing work program to try to improve our communication and outreach to make sure that we maximize the utilization of these benefits that people are eligible for and should be receiving.
In terms of how many are out there, I'm not sure we would have that figure, but I'll ask Frank if he wants to add anything.