With regard to each (a) province and (b) police precinct, (i)(aa) what number of patrol vehicles are in service and (bb) what is the shortage of patrol vehicles, (ii) what is the size of the area, in square kilometres, of each specified precinct and (iii) how many hours were spent patrolling (aaa) in the (aaaa) 2015-16 and (bbbb) 2016-17 financial years and (bbb) since 1 April 2017 in each case?