(1) How many security tenders were advertised by her department (a) in the (i) 2011-12, (ii) 2012-13, (iii) 2013-14 financial years and (b) during the period 1 January 2015 up to the latest specified date for which information is available; (2) in each specified year, (a) how many of the tenders were cancelled and (b) what were the reasons for each cancellation?