• Type of survey: continuous on a quarterly basis
  • Base year: 2015
  • Reference period of weightings: year prior to the current year
  • Population scope: services companies
  • Sample size: around 850 companies and 111 items
  • Number of observations: approximately 7,000 quarterly prices
  • Collection of data: quarterly, prices referred to the quarter
  • General method of calculation: chained Laspeyres
  • Collection method: internet (IRIA system), e-mail, fax, telephone and postal mail

Methodology documents, questionnaires, classifications...