In order to effectively meet the cyclical cash flow needs of state government, the office of management and budget upon approval of the emergency commission is hereby authorized to issue certificates in anticipation of revenue, notes, or bonds, to special funds on deposit in the state treasury. Any issue of such certificates, notes, or bonds must be approved by the emergency commission and are to be used for cash flow financing only, and not to offset projected deficits in state finances unless first approved by the legislative assembly or the budget section if the legislative assembly is not in session. The budget section may approve additional cash flow financing not to exceed eighty percent of estimated general fund revenues relating to sales or production occurring prior to June thirtieth, to be collected in July and August after the end of the biennium. Such additional cash flow financing is only effective for sixty days unless an extension or reapproval is received from the legislative assembly or the budget section if the legislative assembly is not in session. Any request considered by the budget section must comply with section 54-35-02.9. If a revenue shortfall of greater than five percent occurs, the office of management and budget shall order budget allotments under section 54-44.1-12 prior to approval by the legislative assembly or the budget section of such additional cash flow financing. It is the intent of the legislative assembly that all borrowing must be repaid by the end of the biennium. The terms of any specific issue of such certificates, notes, or bonds may not exceed one hundred eighty days from the date of issuance whereupon the principal and interest on the certificates, notes, or bonds must be paid in full from the state general fund or from another issue of a similar nature. All principal and interest on such issues made during a biennial period must be repaid in full at the close of the biennial period from the state general fund. When certificates, notes, or bonds are issued for cash flow purposes to funds which otherwise would be invested, with the investment income accruing to the special fund, the certificate must bear an investment rate of return which must be agreed upon by the state investment board, and must be at a level commensurate with the yield to be reasonably expected by such fund if invested in alternate securities.