At least once in each calendar year, the director of the financial institutions division of the regulation and licensing department shall cause to be examined the condition of the trust department of each state bank exercising trust powers. A report of examination shall be sent to the board of directors of the bank of which the trust department has been examined. There shall be paid to the director for each trust department examination a fee at the rate of one hundred fifty dollars ($150) per day, or fraction thereof, for each authorized representative engaged in the examination.