schedule (a) In general An emissions reduction schedule for greenhouse gas emissions from covered fuels is hereby established, as follows: (1) Reference year (A) In general Subject to subparagraph (B), the greenhouse gas emissions from covered fuels during the year 2017 shall be the reference amount of emissions and shall be determined from the Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990–2017 published by the Environmental Protection Agency in April of 2019. (B) Updates If the greenhouse gas emissions from covered fuels during the year 2017 is revised by the Administrator in a subsequent report, the amount of such emissions contained in such report shall apply for purposes of this section. (2) Emissions reduction targets (A) 2020 through 2030 The emissions reduction target for each calendar year during the period of calendar years 2020 through 2030 shall be determined as follows: Year Emissions Reduction Target 2017 Reference year 2020 90 percent of 2017 emissions 2021 81 percent of 2017 emissions 2022 74 percent of 2017 emissions 2023 68 percent of 2017 emissions 2024 63 percent of 2017 emissions 2025 59 percent of 2017 emissions 2026 56 percent of 2017 emissions 2027 52 percent of 2017 emissions 2028 50 percent of 2017 emissions 2029 47 percent of 2017 emissions 2030 45 percent of 2017 emissions (B) 2031 through 2050 The emissions reduction target for each calendar year during the period of calendar years 2031 through 2050 shall be equal to the emissions reduction target for the preceding year reduced by an amount equal to 2.25 percent of 2017 emissions. (b) Administrative determination Not later than 90 days after the beginning of each calendar year beginning after the date of the enactment of this section, the Secretary, in consultation with the Administrator, shall determine whether emissions of greenhouse gases from covered fuels exceeded the emissions reduction target for the preceding calendar year. The Secretary shall make such determination using the same greenhouse gas accounting method