No certificate shall be issued or continued in operation unless the holder has paid an annual license fee of an amount to be determined by the Legislative Authority for the right to engage in the taxicab business and an amount to be determined by the Legislative Authority for each vehicle operated under a certificate of public convenience and necessity. Such license fees shall be for the calendar year and shall be in addition to any other license fees or charges established by the proper authority and applicable to such holder or the vehicles under his or her operation and control.