Well, there's no data process that could produce hard numbers on the use of non-restricted firearms. The data is simply not collected by the Canadian firearms program. There may be other agencies that collect that kind of information, but we don't.
Evidence of meeting #52 for Public Safety and National Security in the 44th Parliament, 1st Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was firearms.
A recording is available from Parliament.