Each year, within 30 days from the date specified for the closing of the fair as provided in Section 2-7-3, the Alabama State Fair Authority shall forward to the chairman of the commission, in quintuplicate, a report showing in detail the distribution of the prize or premium money, and within said 30 days the Alabama State Fair Authority shall return to the Treasurer of the State of Alabama any funds not expended by the Alabama State Fair Authority in accordance with the applicable plan of distribution.