All annuities, pensions, retirement allowances, the accumulated contributions of any member, or any other benefit whatsoever accrued or accruing to any member or beneficiary shall be unassignable and shall not be subject to execution, attachment, garnishment or any other process of law whatsoever, except as is specifically provided by this subchapter.
(1957 Rev. Ords., § 2.542; 1992 Code, § 35-54)