There shall be paid to the Circuit Court Reporter of the Second Judicial Circuit, by the counties composing the circuit, an additional annual expense allowance of four thousand dollars ($4,000). Such allowance shall be in addition to any compensation now payable to the court reporter and shall be paid monthly from the general funds of the counties composing the judicial circuit on a pro rata basis calculated upon the assessed value of taxable property in the counties of the circuit for the previous fiscal year, as shown by the records in the tax assessors' offices, in such manner that each county shall pay such proportion of the expense allowance as the assessed value of the property in the county bears to the total assessed value of the property within the judicial circuit.