The holders of all debt obligations of the state of Tennessee described in §9-9-105(a) and all persons who may hereafter purchase such obligations shall have, and are hereby declared to have, a vested right in the performance of the covenants and pledges contained in this chapter, and the performance of the duties imposed upon any officer or agency of the state of Tennessee by or pursuant to this chapter may be enforced by the holder of any such obligation by appropriate proceedings; provided, that no such holders or purchasers of debt obligations issued after July 1, 2013, shall have any such rights with respect to §9-9-104.