; (iv) if the base allocation under clause (ii) is not exhausted during any fiscal year, the base allocation under such clause for subsequent fiscal years shall be decreased by the greater of 5 percent (as a percentage of the base allocation for that fiscal year) or a percentage representing the unutilized portion of the base allocation (as a percentage of the base allocation for that fiscal year) during that fiscal year, and if in a subsequent fiscal year the decreased base allocation is itself not exhausted, the base allocation for fiscal years subsequent to that fiscal year shall be further decreased by the greater of 5 percent (as a percentage of the decreased base allocation for that fiscal year) or a percentage representing the unutilized portion of the decreased base allocation (as a percentage of the decreased base allocation for that fiscal year) during that fiscal year (subject to clause (iii) and except that the base allocation shall not fall below 410,000); (v) for purposes of clause (ii), the numerical limitations shall not apply to any alien— (I) who— (aa) was physically present in the United States on July 11, 2018; and (bb) performed agricultural labor or services in the United States for at least 5.75 hours during each of at least 180 days during the 2-year period ending on July 11, 2018; or (II) who has previously been issued a visa or otherwise provided nonimmigrant status pursuant to subclause (a) or (b) of section 101(a)(15)(H)(ii), but only to the extent that the alien is being petitioned for by an employer pursuant to section 218A(b) who previously employed the alien pursuant to subclause (a) or (b) of section 101(a)(15)(H)(ii) beginning no later than July 11, 2018