(b) In order to obtain credited service under this section, an employee shall make an election to do so and shall verify the period of military service. When eligibility for credited service for military service has been established, an indebtedness shall be determined as follows:
- (1) determine the employee's actual compensation, or the calculated annual compensation for those employees working less than 12 months, during the calendar year 1976 or the year in which an employee first becomes vested under AS 39.35.095 — 39.35.680, whichever is later;
- (2) multiply the amount determined under (1) of this subsection by the number of years of military service credited under this section;
- (3) multiply the product determined under (2) of this subsection by six percent for members who are first eligible to claim this military service before January 1, 1987, or eight and one-half percent for members who are first eligible to claim this military service on or after January 1, 1987.