The administrator shall, at intermittent periods, make such investigations and examinations of any licensee or other person as he deems necessary to determine compliance with this chapter. For such purpose he may examine the books, accounts, records and other documents or matters of any licensee or other person. He shall have the power to compel the production of all relevant books, records and other documents and materials relative to an examination or investigation. Such investigations and examinations shall not be made more often than once during a year unless the administrator has reason to believe the licensee is not complying with the provisions of this chapter.