year may not exceed 25 percent (in the case of a single foreign state) or 2 percent (in the case of a dependent area) of the total number of such visas. (B) Unreserved visas Not more than 85 percent of the immigrant visas made available under each of paragraphs (2) and (3) of section 203(b) of the Immigration and Nationality Act ( 8 U.S.C. 1153(b) ) and not reserved under paragraph (1), for each of the fiscal years 2015, 2016, and 2017, may be allotted to immigrants who are natives of any single foreign state. (3) Special rule to prevent unused visas If, with respect to fiscal year 2015, 2016, or 2017, the application of paragraphs (1) and (2) would prevent the total number of immigrant visas made available under paragraph (2) or (3) of section 203(b) of the Immigration and Nationality Act ( 8 U.S.C. 1153(b) ) from being issued, such visas may be issued during the remainder of such fiscal year without regard to paragraphs (1) and (2). (4) Rules for chargeability Section 202(b) of such Act ( 8 U.S.C. 1152(b) ) shall apply in determining the foreign state to which an alien is chargeable for purposes of this subsection.