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PUBLIC LAW 98-21—APR. 20, 1983 97 STAT. 79 as may be applicable, effective with the first month of his or her concurrent entitlement to such benefit and such periodic payment. "(B) If an individual's primary insurance amount has been com- puted under subsection (a)(7) or (dX5), and it becomes necessary to recompute that primary insurance amount under this subsection— "(i) so as to increase the monthly benefit amount payable with respect to such primary insurance amount (except in the case of the individual's death), such increase shall be determined as though such primary insurance amount had initially been com- puted without regard to subsection (a)(7) or (d)(5), or "(ii) by reason of the individual's death, such primary insur- ance amount shall be recomputed without regard to (and as though it had never been computed with regard to) subsection (aX7)or(dX5).". (d) Sections 202(eX2) and 202(fX3) of such Act are each amended by striking out "section 215(f) (5) or (6)" wherever it appears and inserting in lieu thereof "section 215(fX5), 215(fX6), or 215(f)(9XB)". 42 use 402. INCREASE IN OLD-AGE INSURANCE BENEFTF AMOUNTS ON ACCOUNT OF DELAYED RETIREMENT SEC 114. (a) Section 202(wXlXA) of the Social Security Act is amended to read as follows: "(A) the applicable percentage (as determined under para- graph (6)) of such amount, multiplied by", (b) Section 202(w) of such Act is further amended by adding at the end thereof the following new paragraph: "(6) For purposes of paragraph (IXA), the 'applicable percentage' is— "(A) Viz of 1 percent in the case of an individual who first becomes eligible for an old-age insurance benefit in any calen- dar year before 1979; "(B) *A of 1 percent in the case of an individual who first becomes eligible for an old-age insurance benefit in any calen- dar year after 1978 and before 1987; "(C) in the case of an individual who first becomes eligible for an old-age insurance benefit in a calendar year after 1986 and before 2005, a percentage equal to the applicable percentage in effect under this paragraph for persons who first became eligi- ble for an old-age insurance benefit in the preceding calendar year (as increased pursuant to this subparagraph), plus ¥24 of 1 percent if the calendar year in which that particular individual first becomes eligible for such benefit is not evenly divisible by 2; and "(D) % of 1 percent in the case of an individual who first becomes eligible for an old-age insurance benefit in a calendar year after 2004.". (c)(1) Paragraphs (2) (A) and (3) of section 202(w) of such Act are each amend^ by striking out "age 72" and inserting in Ueu thereof "age 70". (2) The amendments made by paragraph (1) shall apply with respect to increment months in calendar years after 1983. 42 use 402. Effective date. 42 use 402 note.