(1) Six per centum per annum upon any such deficiency not exceeding two per centum of such deposits.
(2) Eight per centum per annum upon any additional deficiency in excess of two and not exceeding three per centum of such deposits.
(3) Ten per centum per annum upon any additional deficiency in excess of three and not exceeding four per centum of such deposits.
(4) Twelve per centum per annum upon any additional deficiency therein.