Prior to the time of the retirement of the bonds, or any of them, or the time when interest shall become payable thereon, the county government shall make available sufficient funds to cover the retirement of such bonds or the payment of interest thereon.

45 Del. Laws, c. 123, § ?30; 9 Del. C. 1953, § ?533; 55 Del. Laws, c. 85, § ?4A; 63 Del. Laws, c. 142, § ?9;