- Type of survey: monthly continuous survey.
- Base year: 2015
- Population scope: companies whose main activity is included within division 47 of CNAE-2009 Retail trade, except for motor vehicles and motorcycles.
- Geographical scope: the entire national territory.
- Sample size: Approximately 12,000 companies.
- Type of sampling: stratified random sampling.
- Collection method: Completion of the questionnaire by the respondent using one of the following methods: Internet (IRIA system), e-mail, fax, telephone or postal mail.
Methodological documents, questionnaires, classifications,...