(a) There is hereby provided, commencing October 1, 1984, to any probate judge retired prior to October 1, 1983, under the Judicial Retirement Fund of Alabama and who is receiving a retirement allowance therefrom, a cost-of-living increase in his maximum retirement allowance as follows:

(1) If such person retired prior to October 1, 1979, a 15 percent increase in his maximum retirement allowance.

(2) If such person retired on or after October 1, 1979, but prior to October 1, 1981, a 10 percent increase in his maximum retirement allowance.

(3) If such person retired on or after October 1, 1981, but prior to October 1, 1983, a five percent increase in his maximum retirement allowance.

(b) Any person retired under the Judicial Retirement Fund of Alabama who assumed office for the first time on or after July 30, 1979, for purposes of this section, shall not be entitled to receive the cost-of-living increase provided.

(c) The board of control of the Employees' Retirement System shall determine annually the amount required to pay the costs of the benefits provided in this section and shall certify such amounts to the state Comptroller as payable to the Judicial Retirement Fund for the purpose herein defined.

The provisions of this subsection shall govern and override any seeming or actual conflicts with other provisions of this section.

(d) The provisions of this section are supplemental. It shall be construed in pari materia with other laws regulating and providing for the payment of retirement benefits to retired probate judges of Alabama; however, those laws or parts of laws which are in direct conflict or inconsistent herewith are hereby repealed.