The board of any park district issuing bonds hereunder may levy and collect a direct annual tax upon the property within the district sufficient to pay the principal of and interest upon the bonds as they mature. The county clerk of the county in which the district is located shall annually extend taxes against all the taxable property in the district sufficient to pay the principal of and interest upon such bonds as they mature. The rate at which such taxes shall be extended shall be in addition to the maximum rate now or hereafter authorized to be levied and extended for general corporate purposes.
70 ILCS 1275/10