By April 1 of each year, each insurer shall file an annual report covering the business of the preceding year. The report shall contain a summary of Hawaii motor vehicle insurance experience in a format prescribed by the commissioner. The experience shall be reported for six major classes of motor vehicle insurance:
This report shall contain a detailed explanation of the methods used to assign expenses and investment income to Hawaii motor vehicle classifications, and those used to develop reserves for losses and loss adjustment expenses. Groups of companies shall also file an annual report on a combined basis.
Haw. Code R. § 16-23-66