All bonds issued by authority of Sections 37-29-401 through 37-29-437 shall be full faith and credit bonds of the Mississippi Gulf Coast Junior College District. It shall be the duty of the board of trustees to request and the county board of supervisors to levy annually a tax on all of the taxable property of each county in the district sufficient to meet the principal and interest falling due on said bonds during the year for which said taxes are levied.