Every driver shall maintain a daily manifest upon which are recorded all trips made each day showing time and place of origin and destination of each trip and amount of fare and all such completed manifests shall be returned to the owner by the driver at the conclusion of his tour of duty. The forms for each manifest shall be furnished to the driver by the owner and shall be of a character approved by the city clerk. Every holder of a certificate of public convenience and necessity shall retain and preserve all drivers' manifests in a safe place for at least the calendar year next preceding the current calendar year and such manifests shall be available to the proper city officers. (Prior code § 22-1-6)