As soon as practical, after the close of each fiscal year, an independent audit shall be made of all accounts of the city governments and incorporations established by the city. The certified public accountants, appointed by the council, shall have no personal interest directly or indirectly in the financial affairs of the city or of any of its officers. The scope of the audit shall require a limited review of city-owned property, and the results shall be reported with each annual audited financial report. Copies of all audits shall be placed on file with the County Clerks office and the office of the City Secretary.