There is hereby provided, commencing October 1, 1988, to each person whose effective date of retirement for purposes of receiving benefits from the Teachers’ Retirement System is prior to October 1, 1987, and to beneficiaries of deceased members or deceased retirees provided the date of death for such deceased member or the effective date of retirement for such deceased retiree for purposes of receiving benefits from the Teachers’ Retirement System was prior to October 1, 1987, and who is receiving a monthly allowance from the Teachers’ Retirement System a cost-of-living increase as follows:
(1) One dollar per month for each year of service attained by said retiree for each retiree selecting the maximum retirement allowance or Option 1.
(2) One dollar per month for each year of service attained by said retiree reduced by the retiree’s option election factor for each retiree selecting Options 2, 3 or 4.
(3) One dollar per month for each year of service attained by said deceased member or deceased retiree reduced by the survivor’s option factor for each beneficiary receiving monthly benefits from the Teachers’ Retirement System.