(a) How many investigations by the Special Investigating Unit into the SA Police Service (i) were (aa) undertaken and (bb) completed in the (aaa) 2012-13 and (bbb) 2013-14 financial years and (ii)(aa) are currently underway and (bb) have been completed since 1 April 2014 and (b) what was the outcome of each completed investigation in each specified financial year?