11.3. Despite the first paragraph of section 11.2, Retraite Québec establishes the amount to be paid by the employer as compensation for the years 2012 and 2013 not later than 30 September of the year that follows the year concerned. For the purposes of the second paragraph of that section, the rate of contribution resulting from the actuarial valuation is deemed to be 12.84% for each of those years and the third paragraph of that section applies, with the necessary modifications.