There is hereby irrevocably pledged and appropriated such amounts as may be necessary to pay and to redeem prior to their respective maturities the principal of and the interest on any issue of bonds or to pay the principal of and the interest on any refunding bonds issued to refund any revenue bonds that shall be issued by the Alabama Incentives Finance Authority from the revenues retained by the State of Alabama from the in-lieu-of-taxes payments made by the Tennessee Valley Authority (which are herein called the "TVA payments") following the distribution of a portion of such TVA payments to certain counties in the State of Alabama as provided in Section 40-28-2, and following the pledge and appropriation of TVA payments pursuant to Section 41-9-783, for the Tennessee Valley Exhibit Commission Bonds outstanding on July 20, 1995.