(a) What is the total number of cases of (i) fruitless, (ii) wasteful and (iii) irregular expenditure that were identified by the Auditor-General in his department in the (aa) 2014-15, (bb) 2015-16 and (cc) 2016-17 financial years and (b)(i) what was the total amount involved in each case and (ii) how much has been recovered in each case?