In awarding and distributing grant funds under section 15061(a)of this title for a fiscal year, the Secretary, subject to the availability of appropriations and the condition specified in subsection (d), shall award and distribute grant funds in equal amounts of $500,000 (adjusted in accordance with subsection (b)), to each Center that existed during the preceding fiscal year and that meets the requirements of this part, prior to making grants under subsection (c) or (d).

Notwithstanding paragraph (1), if the aggregate of the funds to be awarded to the Centers pursuant to paragraph (1) for any fiscal year exceeds the total amount appropriated under section 15066 of this title for such fiscal year, the amount to be awarded to each Center for such fiscal year shall be proportionately reduced.