percent of such profits. (D) During any period of time when the Trust Fund has profits of less than $300,000,000 over a 180-day period, 0 percent of such profits. (2) Profits defined In this subsection, the term profits means the amount that the return on investment from bond investments made by the Trust Fund exceeds the amount repaid on loans and deposited into the Trust Fund under subsection (a). (c) Use of excess amounts If the amounts required to be transferred under subsection (b) are in excess of the amounts needed to pay for the costs of the Department of Education described under subsection (b), the Secretary of Education may elect to use such excess amounts (or a portion of such excess amounts)— (1) to carry out the Supplemental Federal Pell Grant Program under section 401(b)(10)