(a) Every judge or clerk first elected or appointed to his or her position on or after November 8, 2016 who is not a member of the Judicial Retirement Fund or Clerks' and Registers' Supernumerary Fund on November 7, 2016 shall come under this article by operation of law. The plan shall not include any judge or clerk who is a member of the Judicial Retirement Fund or Clerks' and Registers' Supernumerary Fund prior to November 8, 2016, regardless of the type of judgeship position held. Each judge or clerk shall contribute to the fund eight and one-half percent (8.5%) of his or her annual salary or base sum as provided in Section 12-18-82. The percentages shall be deducted by the employer from each judge's or clerk's salary and paid into the fund in the State Treasury and credited to the individual account of the judge or clerk from whose salary it was deducted.
(b) On account of each member there shall be paid monthly by the employer an amount equal to a certain percentage of the annual salary of each member to be the employer's contribution. The percentage rate of such contribution shall be fixed for each fiscal year on the basis of the liabilities as shown by the last annual actuarial valuation, and such percentage rate as established by such valuation shall take effect the following October 1 and continue in effect for the fiscal year.