Sec. 2.08. ADMINISTRATION OF FUNDS. The board of trustees shall:

(1) keep separate from all other municipal funds all money and other assets it receives for the benefit of the fund;

(2) keep a record of all claims, receipts, and disbursements and make disbursements only on vouchers signed by such persons as the board of trustees designates by resolution; and

(3) publish annually a report containing a balance sheet showing the financial and actuarial condition of the fund, a statement showing receipts and disbursements during the year covered by the report, and such additional matters as may be determined appropriate by the board of trustees.