; divided by (bb) the total number of such residents of all States. (ii) Limitation The amount allotted to a State under this subparagraph for a fiscal year shall be not less than 0.25 percent of the available amount for the fiscal year. (iii) Adjustment of state allotments Subject to clause (ii), the Secretary shall proportionately increase or decrease the amounts allotted under this subparagraph for a fiscal year as necessary to ensure that the available amount for the fiscal year is allotted among the States. (iv) Redeterminations (I) Frequency The Secretary shall make the determination referred to in clause (i)(II)(aa) every 5 years. (II) Limitation Subject to clause (ii), the amount allotted to a State under this subparagraph, on the basis of such a determination, for a fiscal year after fiscal year 2029 shall be— (aa) not less than 90 percent of the amount of the grant made to the State under this subparagraph for the preceding fiscal year