(a) What is the total number of bomb disposal activities recorded by the SA Police Service (i) for the 2006-07, (ii) for the 2007-08, (iii) for the 2008-09 financial years and (iv) during the period 1 April 2009 up to the latest specified date for which information is available, (b) what are the reasons for high levels of explosive activities in civilian society and (c) where does the majority of explosive devices or materials originate from?