Whenever any of the securities deposited by companies under the provisions of N.C. Gen. Stat. § 58-5-5, 58-5-10, and 58-5-50 shall be depreciated or reduced in value, such company shall forthwith increase the deposit in order to maintain the required deposit in accordance with the amounts required by the said sections. (1945, c. 384; 1989, c. 485, s. 34.)