As used in paragraph (1) of this subsection, the term “food stamp percentage” means, with respect to a State and a fiscal year, the average monthly number of children receiving food stamp benefits in the State for months in the 3 fiscal years referred to in subparagraph (B) of this paragraph, as determined from sample surveys made under section
2025
(c) of title
7, expressed as a percentage of the average monthly number of children receiving food stamp benefits in the States described in such paragraph (1) for months in such 3 fiscal years, as so determined.