; plus (II) the percent increase determined under section 315(c), determined as if the base period were— (aa) if there was no prior increase in such dollar amount pursuant to clause (ii), 2021; or (bb) in any other case, the calendar year immediately preceding the first calendar year in the election cycle for which the most recent such prior increase occurred. (B) Senate amount (i) In general The Senate amount is an amount equal to $100. (ii) Increase In the case of any election cycle beginning after 2022, the amount determined under clause (i) for any election cycle shall be the sum of the dollar amount in effect under such clause for the preceding election cycle increased by the product of— (I) 75 percent (or the percentage specified pursuant to section 505(c) for such election cycle) of the percentage (if any) by which— (aa) the average of the total amount of contributions received during the preceding election cycle by each candidate for the office of Senator who is not a participating candidate; exceeds (bb) the average of the total amount of contributions received during the preceding election cycle by each participating candidate for the office of Senator; and (II) the dollar amount in effect under clause (i) for the preceding election cycle. (iii) Inflation adjustment In the case of any election cycle beginning after 2022 for which there is no increase under clause (ii), the Senate amount in effect for such election cycle shall be the sum of— (I) the greater of the dollar amount specified in clause (i) or the dollar amount the amount in effect for the most recent election cycle for which there was such an increase; plus (II) the percent increase determined under section 315(c), determined as if the base period were— (aa) if there was no prior increase in such dollar amount pursuant to clause (ii), 2021