Average turnover of grocery stores in Belgium 2006-2016 

According to the source, the grocery sector includes the following:
• Retail stores in Belgium selling at least four of the following food categories: edible fats, canned goods; bottled drinks; drinks in the form of solid substances (e.g. coffee and tea); pasta; confectionery
• ‘Food’ sales have to represent at least 40% of total turnover

The following are excluded:
• Stores that are part of petrol stations
• Stores that generate more than 50% of their turnover through the sale of meat products or fish and shellfish.
• Stores specializing in diet foods.

Turnover
The source adds the following information: "We take into account the total turnover generated during the course of the past year. For stores that only opened during the course of the year, sales are extrapolated for a full year. For stores that closed during the course of the year, Nielsen assumes that no sales at all were made in that year. For hypermarkets, only the turnover for the food and paper products"

F1: Large distribution/hypermarket: Carrefour Hyper, Carrefour Market, Carrefour Market by Mestdagh, Colruyt, Delhaize Supermarket, Match and Cora.
F2: Average size distribution supermarkets: Carrefour Market (Franchise), Spar Retail (Retail Partners Colruyt Group), Okay, AD Delhaize, Proxy Delhaize, Intermarché, Smatch and other supermarkets from 400m². It excludes hypermarkets and hard discounters, such as Aldi and Lidl.
Hard discount: Lidl and Aldi.
F3: Small distribution: All self service shops with a selling surface of less than 400m² (e.g. Spar (Retail Partners Colruyt Group), Carrefour Express, Supra et Spar (Lambrechts), Louis Delhaize (Louis Delhaize Group) not included above), and all shops with a “traditional service” (e.g. night-shops”).