With reference to her reply to question 1703 on 19 May 2015, (a) how many registered e-tag holders are there at present and (b) how many deregistrations Friday, 29 May 2015 699 INTERNAL QUESTION PAPER: NATIONAL ASSEMBLY NO 17 - 2015 for (i) private motor vehicles and (ii) motor vehicle fleets took place in each separate month from the introduction of the e-tolling system on 3 December 2013 until the latest specified date for which information is available?