Within 3 years after October 24, 1992, and periodically thereafter, the Secretary shall examine the goals established under section 13252(b)(2) of this title, in the context of the program goals stated under section 13252(a) of this title, to determine if the goals under section 13252(b)(2) of this title, including the applicable percentage requirements and dates, should be modified under this section. The Secretary shall publish in the Federal Register the results of each examination under this subsection and provide an opportunity for public comment.