The license fee for billboards shall be payable as follows: for each billboard, as defined by this chapter, twenty-five dollars per year. All licenses issued under this chapter shall expire at midnight on the thirty-first day of December of the year of issuance. (Ord. M-1542 §1, 1974: Ord. M-1140 §7, 1969: Ord. C-427, 1951: Ord. 1454 §3, 1930)