What (a) steps are being taken by her department to address the extremely high vacancy rate that is currently sitting at over 11% (i) across all sectors of her department and (ii) in the entities reporting to her, including the Property Management Trading Entity, (b) is the reason that the vacancy rate is so high, (c) total number of the vacancies are as a result of the Special Investigations Unit investigations into corruption and (d) is the status of the investigation process into the high-ranking members of her department and/or entities who are under investigation and still on full pay?