For every person, firm, or corporation engaged in the business of advertising by means of billboards or of posting, sticking, tacking, fixing, affixing, or painting advertising matter upon signs, fences, billboards, advertising signboards, buildings or other structures used in whole or in part for advertising purposes, an annual license tax is established and levied, the amount of which shall be $10.00 a year, and in addition two percent of the gross income per year, such amount to be paid at the end of each calendar year. A statement signed by a notary showing the gross income for the year must be filed with the city clerk yearly. (Ord. 1635 § 1, 1996; Ord. 472 § 1, 1965; Ord. 91 § 11, 1929).