"Figure 4: Contributions to month-on-month volume and value growth from the four main retail sectors ","" "September 2017 compared with August 2017","" "","" "Notes","" "Unit","Percentage points" "","" "","Volume","Value" "Food stores","-0.2","-0.1" "Non-food stores","-0.6","-0.6" "Non-store retailing","0.2","0.2" "Petrol stations","-0.2","0" "Total","-0.8","-0.5"