(a) No license shall be issued by the Safety-Service Director until there is paid a fee as follows:
(1) For each taxicab having a seating capacity or not more than five passengers, twenty dollars ($20.00).
(2) For each taxicab having a seating capacity of more than five passengers and not over ten passengers, thirty dollars ($30.00).
(3) For each taxicab having a seating capacity of over ten passengers, fifty dollars ($50.00).
(b) The license shall be issued for not more than one year and may be renewed. If any license is issued and not used for the whole year, there may be refunded a proratio of the license fee of not more than fifty percent (50%).