Each lot or place other than a storage garage where a charge is made for storage of motor vehicles shall pay the following annual license tax: For each 1,000 square feet or major fraction thereof up to 50,000 square feet, $1; on each 1,000 square feet or major fraction thereof in excess of 50,000 square feet the license tax shall be $.50.
Ala. Code § 40-12-56 (1975)