The governing body of any city of the second class in which there is located or shall hereafter be located a hospital established by a hospital district, and which city is located in a county having a population of not less than fourteen thousand (14,000) and not more than sixteen thousand (16,000), and having a total assessed taxable tangible valuation of not less than thirty-seven million dollars ($37,000,000) and not more than forty-five million dollars ($45,000,000), is hereby authorized to enter into a contract with the governing body of such hospital district wherein such city shall agree to pay the costs of the operation of said hospital which are in excess of the amounts received for patient care and maintenance. Such city by any such contract or agreement shall limit its maximum liability for any one calendar year to ten thousand dollars ($10,000). Any governing body of any city entering into such a contract or agreement is hereby authorized to make an annual tax levy for the purpose of providing revenue to pay such agreed costs of operation of said hospital and to pay a portion of the principal and interest on bonds issued by such city under the authority of Kan. Stat. Ann. § 12-1774, and amendments thereto. Such tax levy shall be in addition to all other tax levies authorized or limited by law, and shall not be subject to any tax levy limit or aggregate tax levy limit prescribed by Kan. Stat. Ann. § 79-1952, and acts amendatory thereof or supplemental thereto.