(a) What number of reports released by the Office of the Public Protector were taken on review (i) in each of the past three financial years and (ii) since 1 April 2017 and (b) in respect of each report taken on review, what are the details regarding the (i) description of the report concerned, (ii) date of release, (iii) total amount in rand spent by the Office of the Public Protector on legal fees and (iv) outcome of litigation, where applicable?