The city judge shall receive an annual salary payable monthly in equal proportions by the city of Slidell and the police jury of St. Tammany parish, Louisiana, upon the following basis:
(1) If the population of the territorial jurisdiction of the court is less than 10,000, he shall be paid a minimum salary of $3,600.00.(2) If the population of the territorial jurisdiction of the court is 10,000 or more, but less than 20,000, he shall be paid a minimum salary of $4,800.00.(3) If the population of the territorial jurisdiction of the court is 20,000 or more, but less than 40,000, he shall be paid a minimum salary of $6,000.00.(4) If the population of the territorial jurisdiction of the court is 40,000 or more, but less than 100,000, he shall be paid a minimum salary of $7,200.00.In addition to salary the judge shall receive the same fees as are payable to the justice of peace in all civil cases where the amount involved does not exceed $100.00, exclusive of interest, and the same fees as are payable to the clerks of district courts in all other civil cases. He shall not receive any fees in criminal matters, including peace bond cases.