In light of the fact that the Government continues to spend billions of rands through leases and rentals to accommodate government departments and agencies, and considering that in 2013 a total of 930 000 transactions worth more than R90 billion were scrutinised and many of which were found to be not in line with the Public Finance Management Act, Act 1 of 1999, (a) what is the total number of fraud cases related to leases and rentals which included officials from government departments who were investigated by either his department or the SA Police Service between 2012 and 2015 and (b) how many of the specified cases found wrongdoing on the part of departmental officials?