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  • Type of survey: monthly continuous survey.
  • Base year: 2015
  • Population scope: companies whose main activity is described in sections G, (Trade), H (Transport and Storage), I (Accommodation), J (Information and Communications), M (Professional, Scientific and Technical Activities) and N (Administrative and Support Services Activities) of the National Classification of Economic Activities (CNAE-09).
  • Geographical scope: the entire national territory except Ceuta and Melilla, for which only Division 47 of CNAE-09 (retail trade) is included.
  • Sample size: 28,000 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.

Methodology documents, questionnaires, classifications...