When requested in writing by the board of directors or holders of a majority of the shares of a financial institution, the department, at a time fixed by it, shall examine or investigate the affairs and condition of the financial institution. However, this provision shall not be construed to mean that such institution, directors, or shareholders shall have any greater right to require the department to disclose the results of such examination or investigation than they have in case of any examination or investigation at the insistence of the department nor shall the department be required under this Code section to make more than one examination per year of any financial institution.