Deposit of Escrows with Banking Institution. Whenever the fees paid shall exceed five thousand ($5,000.00) dollars, they shall be deposited in a banking institution or savings and loan association in this State, insured by an agency of the Federal government, or, in any other fund or depository approved for such deposits by the State of New Jersey, in an account bearing interest at the minimum rate currently paid by the institution or depository on time or savings deposits. The Chief Financial Officer of the Borough shall notify the applicant, in writing, of the name and address of the institution or depository in which the deposit is made and the amount of the deposit. If the amount of interest earned on the deposit exceeds one hundred ($100.00) dollars, that entire amount shall belong to the applicant and shall be refunded to the applicant by the Borough on an annual basis or at the time the deposit is repaid or applied to the purpose for which it was deposited; provided, however, that the Borough shall retain, for administrative expenses, a sum equivalent to more than thirty-three and one-third (33 1/3%) percent of the entire amount, which shall be in addition to all other administrative expenses. In the event that the interest paid on a deposit for a year does not exceed one hundred ($100.00) dollars, the same is to be retained by the Borough.