104.035.  Deferred normal annuity on termination of employment to be paid to employee, requirements — reemployment and member of system, prior service credit restored, when — transportation department and highway patrol, deferred normal annuity, when, requirements. — 1.  Any member whose employment terminated prior to August 13, 1976, and who had served twenty years or more as an employee shall be entitled to a deferred normal annuity based on his creditable service, average compensation, and the act in effect at the time his employment was terminated.

  2.  Any member whose employment terminates on or after August 13, 1976, and prior to June 1, 1981, and who had served fifteen or more years' creditable service as an employee or had served ten or more years of creditable service as an employee and was at least thirty-five years of age at the date of termination of employment shall be entitled to a deferred normal annuity based on his creditable service, average compensation, and the act in effect at the time his employment was terminated.

  3.  Any member whose employment terminates on or after June 1, 1981, and who has ten or more years of creditable service at the date of termination of employment shall be entitled to a deferred normal annuity based on the member's creditable service, average compensation and the act in effect at the time the member's employment is terminated.

  4.  Any member entitled to a deferred normal annuity as provided in subsection 1, 2, 3 or 5 of this section who reenters the service of a department and again becomes a member of the system shall have his prior period of service restored, so that benefits determined by reason of his retirement or subsequent withdrawal from service will include the sum of all periods of creditable service, and his annuity shall be based on his creditable service, average compensation, and the act in effect at the time of his retirement or subsequent withdrawal from service.

  5.  Notwithstanding any other law to the contrary, any member of the transportation department and highway patrol retirement system whose employment terminated on or after September 28, 1992, who has five or more years of vesting service as an employee at the date of termination of employment shall be entitled to a deferred normal annuity based on the member's creditable service, average compensation, and the act in effect at the time the member's employment was terminated.