146.12. The sum of the employer contribution and the member contributions payable in each fiscal year of the pension plan must be equal to or greater than the sum of the following amounts:(1) the current service contribution, which is equal to the sum of the contribution established in accordance with sections 128 and 129 and the contribution established under defined contribution provisions;
(2) (paragraph repealed);
(3) the sum of the amortization payments determined for the fiscal year and the special improvement payments payable during the fiscal year.