Each circuit clerk shall be compensated by the state at a salary established by law; provided, however, that any supplemental salary now provided to circuit clerks by their respective counties on May 28, 1980, shall not be diminished; and provided, further, that any county may, pursuant to a local act already enacted or hereafter enacted, pay a circuit clerk a supplemental salary from the general fund of such county in excess of any supplemental salary provided for by this section.
Ala. Code § 12-17-92 (1975)