Pooled credit ratio.
(k) Pooled credit ratio. Effective January 1, 1991, and on the first of each subsequent calendar year, the Board will reduce each employer's rate of contribution, as computed under 345.303 of this part, by the amount of the pooled credit ratio, if any, applicable to such calendar year. This ratio is computed by reference to the accrual balance to the credit of the Account as of the preceding June 30. The Board will determine the amount of the pooled credit ratio, as follows: