beneficiary for a calendar year means an individual in any case in which such calendar year is at least the 16th year beginning after the applicable year of eligibility for such individual. (B) For purposes of this subsection, the applicable year of eligibility for an individual is the year in which the individual on whose wages and self-employment income the monthly insurance benefit is based initially became eligible (or died before becoming eligible) for old-age insurance benefits under subsection (a) or disability insurance benefits under section 223. (3) (A) The increase required under paragraph (1) with respect to the monthly insurance benefit of an individual who is a qualified beneficiary for a calendar year shall be equal to the applicable percentage (specified for such benefit in subparagraph (B)) of the full increase amount for such calendar year (determined under subparagraph (C)). (B) The applicable percentage specified for a monthly insurance benefit under this subparagraph for a calendar year is the percentage specified, in connection with the year described in the following table, as follows: The applicable If the year described is: percentage is: the 16th year beginning after the applicable year of eligibility 20 percent the 17th year beginning after the applicable year of eligibility 40 percent the 18th year beginning after the applicable year of eligibility 60 percent the 19th year beginning after the applicable year of eligibility 80 percent the 20th year beginning after the applicable year of eligibility or later 100 percent. (C) (i) Except as provided in clause (ii), the full increase amount determined under this subparagraph for a calendar year in connection with the monthly insurance benefit of a qualified beneficiary is a dollar amount equal to 5 percent of the primary insurance amount of a putative individual if— (I) such primary insurance amount were determined for January of such calendar year