For the performance of additional duties imposed by § 32 of Article I of the Missouri Constitution and the additional duties imposed by the 1992 revision of section 546.630^*, beginning on January 1, 1998, the circuit attorney shall receive an annual salary of eighty-six thousand dollars and this salary shall constitute the sole compensation for all duties required to be performed by the circuit attorney under the law. The circuit attorney’s fees shall continue to be taxed as heretofore, but when collected shall be turned into the treasury of the city. All circuit attorney’s fees in criminal cases not paid by the state shall be collected by the circuit clerk or responsible clerk and paid into the treasury of the city. When such fees are paid by the state, they shall be paid into the city treasury in the manner now provided by law.