Any indebtedness issued by a public trust having as its principal purpose, and which is primarily engaged in, the ownership and operation of a hospital or related institution, as defined in Section 1-701 of Title 63 of the Oklahoma Statutes, and the beneficiary of which is a county or municipality shall not be subject to the beneficiary approval requirements of Section 176 of Title 60 of the Oklahoma Statutes, if the indebtedness does not exceed five percent (5%) of the greater of:
Okla. Stat. tit. 60, § 178.13