The license fee charged by the Mayor or his designee for the license required by this chapter shall be twenty-five dollars ($25.00) per year. After the license is issued, each additional identification badge issued to other employees or agents working for the same firm to which a license has been issued shall be required to pay five dollars ($5.00) for each additional identification badge issued. All annual licenses issued under the provisions of this chapter shall expire on December 31 in the year when issued. Other licenses shall expire on the date specified in the license.