The adjustments provided by this article are subject to the following limitations:
- (a) No adjustment shall be made for any year for which the adjustment is less than 1 percent of the base allowance, and the adjustment for any year shall not exceed 6 percent of the base allowance.
- (b) No monthly allowance in any year may exceed an amount equal to the base allowance increased by 2 percent per year compounded for the number of years intervening between the end of the base year and the beginning of the calendar year in which the adjustment is made.
- (c) No monthly allowance in any year shall be less than the base allowance.
- (d) No adjustment shall be made in any year in which the actuarial interest rate is less than 4.5 percent.