191—98.18 (505) Canadian and British companies. In the case of Canadian and British insurers, the annual audited financial report shall be defined as the annual statement of total business on the form filed by such companies with their supervisory authority, duly audited by an independent chartered accountant. For such insurers, the letter required in rule 98.6(505) shall state that the accountant is aware of the requirements relating to the annual audited financial report filed with the commissioner pursuant to rule 98.4(505).