; (13) section 119 of title 23, United States Code (as in effect for fiscal years 2016 through 2020, but only in an amount equal to $639,000,000 for each of those fiscal years); and (14) section 119 of title 23, United States Code (but, for fiscal years 2021 through 2025, only in an amount equal to $639,000,000 for each of those fiscal years). (c) Distribution of obligation authority For each of fiscal years 2021 through 2025, the Secretary— (1) shall not distribute obligation authority provided by subsection (a) for the fiscal year for— (A) amounts authorized for administrative expenses and programs by section 104(a) of title 23, United States Code; and (B) amounts authorized for the Bureau of Transportation Statistics; (2) shall not distribute an amount of obligation authority provided by subsection (a) that is equal to the unobligated balance of amounts— (A) made available from the Highway Trust Fund (other than the Mass Transit Account) for Federal-aid highway and highway safety construction programs for previous fiscal years the funds for which are allocated by the Secretary (or apportioned by the Secretary under section 202 or 204 of title 23, United States Code); and (B) for which obligation authority was provided in a previous fiscal year; (3) shall determine the proportion that— (A) the obligation authority provided by subsection (a) for the fiscal year, less the aggregate of amounts not distributed under paragraphs (1) and (2) of this subsection; bears to (B) the total of the sums authorized to be appropriated for the Federal-aid highway and highway safety construction programs (other than sums authorized to be appropriated for provisions of law described in paragraphs (1) through (13) of subsection (b) and sums authorized to be appropriated for section 119 of title 23, United States Code, equal to the amount referred to in subsection (b)(14) for the fiscal year), less the aggregate of the amounts not distributed under paragraphs (1) and (2) of this subsection