§ 139. Costs of administration. 1. On and after April first, nineteen hundred fifty-five, the state and each political subdivision extending old-age and survivors insurance coverage to its employees shall contribute to the annual cost of administering the provisions of this article. The director, during the month of March, nineteen hundred fifty-six, and at the close of each fiscal year of the state thereafter, shall determine the pro rata share of such annual cost to be contributed by the state and by each political subdivision. Such share shall be determined on the basis of the ratio which contributions required to be made to the contribution fund by the state or such political subdivision, as the case may be, bear to the total amount of contributions required to be made to such fund during such fiscal year.

2. The director shall thereupon submit to the fiscal officer of each political subdivision a statement of the amount to be contributed by it pursuant to this section. Payment of the amount specified in such statement shall be made by each political subdivision within sixty days after the receipt thereof.

3. There shall be included in the budget estimate of the state agency furnished to the division of the budget an estimate of the amount necessary to meet the state's pro rata share of the cost of administering the provisions of this article during the current fiscal year.

4. Amounts received from political subdivisions pursuant to this section and amounts appropriated by the legislature to meet the state's pro rata share of the costs of administering this article shall be used to reimburse the state purposes fund in the general fund for any advances made from such fund for the purpose of administering the provisions of this article.