Whether the Independent Regulatory Board for Auditors (IRBA) received any reports of reportable irregularities, in terms of section 45 of the Auditing Profession Act, Act 26 of 2005, in respect of each major public entity as outlined in Schedule 2 of the Public Finance Management Act, Act 1 of 1999, since 3 August 2017; if not, why not; if so, (a) on what date was each report received, (b) what is the name of the auditor from which each such report was received, (c) what are the details of the matters addressed in each report and (e) what action was taken following receipt of each such report by the IRBA?