the program in which such students were enrolled in the normal time for completion of such program (within the meaning of section 132(i)(1)(J)(i)) bears to the total number of bachelor’s degrees awarded to such students by all eligible institutions for such award year. (c) Data In determining the allotments under subsection (b), the Secretary may request from eligible institutions any data that may be necessary. (d) Authorization of appropriations There are authorized to be appropriated, and there are appropriated, to carry out this section $500,000,000 for fiscal year 2021 and each succeeding fiscal year. Any amounts appropriated under this subsection shall be available until expended. (e) Definitions In this section: (1) Eligible institution The term eligible institution means an institution of higher education (as defined in section 101)— (A) in which, for the 3 most recent award years, the average percentage of undergraduate students enrolled at the institution who received Federal Pell Grants is not less than 25 percent of the total number of undergraduate students enrolled at such institution