During the year in which any such hospital is completed and for which no tax levy has been made under the provisions of Kan. Stat. Ann. § 13-14b12, the governing body of the city is hereby authorized to issue emergency warrants in a total amount of not more than fifty thousand dollars ($50,000) for the purpose of raising funds to operate and maintain said hospital during such year. Such warrants shall draw interest at a rate of not more than the maximum rate of interest prescribed by Kan. Stat. Ann. §§ 10-1009 and may be issued only for the purpose of paying the operating costs of the hospital during the year. The governing body of the city shall each year, at the time of fixing the rate of levy for such city, make provisions therein for raising sufficient money to pay not less than twenty percent (20%) of the total amount of warrants issued hereunder until all of said warrants have been paid.