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  • Type of survey: monthly continuous survey 
  • Base period: 2016
  • Weight reference period: previous year
  • Sample of municipalities: 177
  • Number of items: 479
  • Number of observations: approximately 220,000 prices per month
  • Classification: 12 groups, 43 subgroups, 101 classes and 219 subclasses; 57 headings and 29 special aggregates
  • General calculation method: Laspeyres chain index
  • Collection method: personal visits to outlets, e-mail, telephone and internet

Methodological documents

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