(a) This section shall only apply to DeKalb County in the Ninth Judicial Circuit.
(b)(1) Commencing on August 1, 1999, the District Attorney of the Ninth Judicial Circuit shall be paid an additional annual expense allowance in an amount equal to 30 percent of the state base payor salary of the district attorney.
(2) The expense allowance shall be paid by the DeKalb County Commission out of the appropriate funds of the District Attorney of the Ninth Judicial Circuit. The expense allowance shall be payable in equal monthly installments and shall be in addition to any other expense allowances, compensation, or salary provided by law.
(3) The additional annual expense allowance authorized in subdivision (1) shall be reduced to 15 percent commencing February 1, 2005.