Section 12
SEC. 12. The following new section to be designated section twenty of Republic Act Numbered Eleven hundred and sixty-one is hereby added: "SEC. 20. Government contribution.—As the contribution of the Government to the operation of the System the Congress shall annually appropriate out of any funds in the national treasury not otherwise appropriated, the necessary sum or sums to meet the estimated expenses of the System for each ensuing year. In addition to this contribution, the Congress shall appropriate from time to time such sum or sums as may be needed to assure the maintenance of an adequate working balance of the funds of the System as disclosed by suitable periodic actuarial studies to be made of the operations of the System.