Until the assets of the Trust Fund exceed five million dollars, not more than seventy-five percent of the amount deposited in the Trust Fund each year from contributions plus all earnings from the investment of monies of the Trust Fund credited during the previous fiscal year, after allowances for operating expenses, is available for disbursement upon the authorization of the board of trustees.

When the assets in the Trust Fund exceed five million dollars, all credited earnings plus all future annual deposits to the Trust Fund from contributions are available for disbursement upon the authorization of the board. At least six of the board members shall authorize the disbursement of funds.