Annuity in excess of that fixed in Sections 11--129, 11--130 and 11--131 shall not be granted to any employee described therein, unless he reentered service before age 65. If such re-entry occurs, his annuity shall be provided in accordance with Sections 11--128 to 11--131, inclusive, whichever are applicable.
40 ILCS 5/11-132