; (C) $2,140,000,000 shall become available October 1, 2020; (D) $1,735,000,000 shall become available October 1, 2021; (E) $1,746,000,000 shall become available October 1, 2022; (F) $1,776,000,000 shall become available October 1, 2023; and (G) $2,002,756,000 shall become available October 1, 2024. (2) Period of availability An amount made available under subparagraph (A), (B), (C), (D), (E), (F), or (G) of paragraph (1) shall remain available for five years after the date specified in that subparagraph. (c) Availability of border security investment funds (1) In general Of the amount appropriated in subsection (a)(2)— (A) $500,000,000 shall become available October 1, 2018; (B) $1,850,000,000 shall become available October 1, 2019; (C) $1,950,000,000 shall become available October 1, 2020; (D) $1,925,000,000 shall become available October 1, 2021