"Figure 7: The all food items index has fallen below its Week 1 level for the first time since the series began, to 99.8%","" "Online price change of selected high-demand products 16 March to 26 July: index week 1 (16 to 22 March) = 100, UK","" "","" "Notes","1. Index movements may not be exactly the same as percentage changes shown in Figure 6 as a result of rounding. 2. Week 1 refers to the period 16 to 22 March 2020, and Week 19 refers to the period 20 July to 26 July. 3. The time series for all individual HDP items are published in a [dataset](https://www.ons.gov.uk/economy/inflationandpriceindices/datasets/onlinepricechangesforhighdemandproducts) alongside this release. " "Unit","Index, week 1 = 100" "","" "","All food","All household and hygiene","All HDP items","Nappies","Vitamin C" "Week 1","100","100","100","100","100" "Week 2","100.5","100","100.3","101.3","100.5" "Week 3","101","100.1","100.5","102.7","100.9" "Week 4","101.2","100.5","100.6","102.8","100.3" "Week 5","101.4","100.7","100.9","100.4","100.3" "Week 6","101.4","101.4","101.2","95.7","100.3" "Week 7","101.5","101.1","101","93.7","98.6" "Week 8","101.3","101","100.6","92.7","97" "Week 9","101.3","101","100.5","94.1","97" "Week 10","101.4","100.8","100.4","94","96.5" "Week 11","101.3","100.8","100","96.8","92.9" "Week 12","101.2","101.2","100.2","101.4","92.4" "Week 13","100.9","101.2","100.1","101.6","92.4" "Week 14","100.3","100.7","99.9","100.4","97.4" "Week 15","100.2","100.5","99.9","100.3","100.4" "Week 16","100.2","100","99.7","100.2","100.3" "Week 17","100.7","99.3","99.6","98.8","100.3" "Week 18","100","98.2","98.9","90","100.3" "Week 19","99.8","98","98.8","89.4","101.9"