The Secretary as of the close of each calendar quarter (and at such other times as the Secretary determines appropriate) shall make an estimate of the amount of taxes which will be collected under section
59A, this section (to the extent attributable to the Hazardous Substance Superfund financing rate), and sections
4661 and
4671 and credited to the Hazardous Substance Superfund during the period beginning January 1, 1987, and ending December 31, 1995.