Applications for renewal of licenses issued under this chapter shall be made to the clerk on or before the December 31st expiration date provided for in BCC 5.32.030. The clerk shall not renew any pawnshop license if such pawnshop has discontinued operations for a continuous period of 180 days immediately preceding such application. There shall be assessed and collected by the clerk an additional charge, computed as a percentage of the license fee, on applications not made on or before said expiration date, as follows: