(a) Except as provided by Subsection (b), the attorney general shall pay in installments the part of an award for allowable expenses that accrue after the award is made.
(b) At the request of the claimant or victim, the attorney general may pay in a lump sum an award for future pecuniary loss if the attorney general finds that:
(1) paying the award in a lump sum will promote the interests of the claimant or victim; or
(2) the present value of all future pecuniary loss does not exceed $1,000.

(c) The attorney general may not pay in installments an award for future pecuniary loss for a period for which the attorney general cannot reasonably determine the future pecuniary loss.