Any vested foundation member can retire in the ten years preceding the member's normal retirement age and the retirement benefit shall be reduced by the lesser of the following: (1) One-fourth of one percent for each full month which remains between the date of commencement of payments and the date the member will reach the member's normal retirement age; or (2) One-fourth of one percent for each full month which remains between the date of commencement of payments and the date the member will reach the member's reduction age. Source: SL 1967, ch 303 , § 7 as added by SL 1968, ch 216 , § 1; SDCL Supp, § 3-12-27.1; SL 1970, ch 25 , § 6; SL 1974, ch 35 , § 60; SL 1978, ch 34 , § 1; SL 1986, ch 37 , § 8; SL 2016, ch 32 , § 44; SDCL § 3-12-106 ; SL 2019, ch 22 , § 1.