The Use of Scanner Data for Price Statistics in the Netherlands Huib van de Stadt Head of Unit Prices and Business Cycle Statistics Netherlands 15 October 2009

Scannerdata – Average transaction price (sales / number) –per EAN-code –per supermarket –per week – Price pairs on lowest possible level – Aggregation for CPI and HICP

Advantages – No sampling needed – Transaction price instead of advertised price – No interviewing needed. Low costs – Error free digital data transmission – Turn-over information for weighting

Implementation – In 2002 for one supermarket chain – In november 2009 five additional chains –Market share in Coicop 1 = 40% –5% of HICP –Data for ca articles = EAN-codes – Manual price collection will be reduced by 5000 monthly prices (9%)

Future – For another 5 chains scannerdata available – Other branches – Many contacts with other chains – Implementation will start in 2010 – Finetuning data filters

Uses beyond HICP – More detailed product classification. EAN? – Average prices – European Comparison Program – Regional prices (not in current data) No production system available!

Questions?