"Figure 3: Contributions to year-on-year volume and value growth from the four main retail sectors ","" "September 2017 compared with September 2016","" "","" "Notes","" "Unit","Percentage points" "","" "","Volume","Value" "Food stores","-0.5","0.6" "Non-food stores","0.4","1.7" "Non-store retailing","1.5","1.8" "Petrol stations","-0.2","0.3" "Total","1.2","4.4"