The General Retail Trade Indices (ICD) (base 2015=100) without service stations, at current prices, increased by 2.3% on a year–over–year basis in Catalonia in January 2018. By product type, food increased by 2.8% year-on-year and the rest of products increased by 1.9%. Within this type showed increases household equipment and other goods (6.2% and 2.1%, respectively); while personal equipment decreased by 1.5%. In the same period the General Index of Retail Commerce with service stations, at current prices, showed an increase by 1.8% compared to a year ago.
The main objective of this index is to measure the short-term developments of companies of retail trade activity. The results are disaggregated into food products and other products. In the latter products are broken Household equipment, Personal equipment and Other goods. Idescat monthly draws the indexes of retail trade and all information is presented both in current prices and in constant prices by deflating the nominal series from data provided by INE.
With the publication of the data for January 2018 based on 2015, Idescat complies with Council Regulation (EC) 1165/98 on short-term statistics, which establishes a change of basis every five years. The implementation of this new basis improves the representativeness of the indicator and updates the weighting structure and the sample of informant units. The linked sets of the indexes based on 2015 have been published since January 2005.