; or (B) $35,000. (2) Adjustment of amount In 2019 and each year thereafter, the dollar amount described in paragraph (1)(B) shall be increased by an amount equal to the product of— (A) that dollar amount; and (B) the cost-of-living adjustment determined under section 1(f)(3)(A) of the Internal Revenue Code of 1986 for the year, determined by substituting the C–CPI–U for calendar year 2017 for the CPI for calendar year 2016 and all that follows in clause (ii) of that section. (3) Joint works In the case of a work of visual art that is a joint work, each author of the work or, if applicable, author's successor as copyright owner shall be entitled to an equal share of any royalty for the sale of a copy of the work. (d) Collection and payment of royalty (1) Collection Not later than 90 days after the date on which the final payment of the price of the copy of the work is made, the person that conducts the auction shall pay the resale royalty calculated under subsection (c) to a visual artists’ copyright collecting society designated by the Register of Copyrights under subsection (h). (2) Distribution Not fewer than 4 times each year, a visual artists’ copyright collecting society to which payments are made under paragraph (1) shall distribute to the author or the author's successor as copyright owner an amount equal to the difference between— (A) all royalties attributable to the sales of copies of works by the author