; and (iv) the cost of any other greenhouse gas estimated by the Working Group. (4) Working Group The term Working Group means the Interagency Working Group on the Costs of Greenhouse Gases established under section 5(a). 4. Cost of carbon dioxide, cost of methane, and cost of nitrous oxide (a) Cost of carbon dioxide In developing any rulemaking that requires a regulatory impact analysis, making any substantial procurement decision for which the cost of carbon dioxide is not applied before the date on which a revised version of the costs of greenhouse gases is finalized, the head of any Federal agency shall consider and document the cost of carbon dioxide in accordance with the amounts specified in the following table: Cost of Carbon Dioxide, 2010 Through 2050 (in 2007 Dollars per Metric Ton of Carbon Dioxide), Discount Rate and Statistic Year 5 Percent Average 3 Percent Average 2.5 Percent Average High Impact (95th Percentile at 3 Percent Discount Rate) 2010 $10 $31 $50 $86 2011 $11 $32 $51 $90 2012 $11 $33 $53 $93 2013 $11 $34 $54 $97 2014 $11 $35 $55 $101 2015 $11 $36 $56 $105 2016 $11 $38 $57 $108 2017 $11 $39 $59 $112 2018 $12 $40 $60 $116 2019 $12 $41 $61 $120 2020 $12 $42 $62 $123 2021 $12 $42 $63 $126 2022 $13 $43 $64 $129 2023 $13 $44 $65 $132 2024 $13 $45 $66 $135 2025 $14 $46 $68 $138 2026 $14 $47 $69 $141 2027 $15 $48 $70 $143 2028 $15 $49 $71 $146 2029 $15 $49 $72 $149 2030 $16 $50 $73 $152 2031 $16 $51 $74 $155 2032 $17 $52 $75 $158 2033 $17 $53 $76 $161 2034 $18 $54 $77 $164 2035 $18 $55 $78 $168 2036 $19 $56 $79 $171 2037 $19 $57 $81 $174 2038 $20 $58 $82 $177 2039 $20 $59 $83 $180 2040 $21 $60 $84 $183 2041 $21 $61 $85 $186 2042 $22 $61 $86 $189 2043 $22 $62 $87 $192 2044 $23 $63 $88 $194 2045 $23 $64 $89 $197 2046 $24 $65 $90 $200 2047 $24 $66 $92 $203 2048 $25 $67 $93 $206 2049 $25 $68 $94 $209 2050 $26 $69 $95 $212. (b) Cost of methane In developing any rulemaking that requires a regulatory impact analysis, making any substantial procurement decision for which the cost of methane is not