1. The allowance shall equal 1.70 percent of his average final compensation multiplied by the amount of creditable service. Notwithstanding the foregoing, for a member appointed or elected to an original term commencing on or after January 1, 2013, the allowance shall equal the sum of (a) 1.65 percent of his average final compensation multiplied by the amount of his creditable service performed or purchased on or after January 1, 2013, and (b) 1.70 percent of his average final compensation multiplied by the amount of all other creditable service.In no case shall the annual retirement allowance exceed 78 percent of the average final compensation of the member.For retirements between October 1, 1994, and December 31, 1998, any judge who is a member or beneficiary of a retirement system administered by the Board shall receive an additional retirement allowance equal to three percent of the service retirement allowance payable under this section. Average final compensation attributable to service as Governor, Lieutenant Governor, Attorney General, or member of the General Assembly shall not be included in computing this additional retirement allowance.

2. The allowance shall be determined in the same manner as for normal retirement with creditable service and average final compensation being determined as of the date of actual retirement. If the member has not attained his sixtieth birthday or has less than 30 years of service, the amount of the retirement allowance shall be reduced on an actuarial equivalent basis for the period by which the actual retirement date precedes the earlier of (i) his normal retirement date or (ii) the first date on or after his sixtieth birthday on which he would have completed a total of 30 years of creditable service.In no case shall the annual retirement allowance exceed 78 percent of the average final compensation of the member.