(a) What was the average number of cases assigned to each detective at the (i) Diepsloot, (ii) Gelvandale, (iii) Bethelsdorp, (iv) Temba, (v) Manenberg, (vi) Grahamstown and (vii) Cape Town Central Police Stations in the (aa) 2011-12, (bb) 2012-13, (cc) 2013-14, (dd) 2014-15 and (ee) 2015-16 financial years and (b) what is the total number of (i) the specified cases that were closed undetected and (ii) dockets that went missing in the specified financial years?