What were the average detective to docket ratios in the (a) Delft, (b) Manenberg, (c) Bishop Lavis, (d) Eldorado Park, (e) Atlantis, (f) Nyanga, (g) Gugulethu, (h) Inanda, (i) Harare and (j) Khayelitsha Police Stations (i) in each of the past five financial years and during the period 1 April 2016 up to the latest specified date for which information is available?