In conjunction with the rebasing of the Composite Consumer Price Index, the series of value and volume indices of retail sales have been re-referenced, taking October 2014 to September 2015 as the new reference period and adopting the relevant components of the 2014/15-based Composite Consumer Price Index as deflators for compiling the volume index of retail sales. The volume index of retail sales is compiled based on the chain-linking approach as stipulated in the International Recommendations for Distributive Trade Statistics 2008 published by the United Nations Statistics Division. The value and volume indices of retail sales contained in this statistical table and their year-on-year rates of change (including those for earlier months back to October 2004) are compiled based on the re-referenced series. It should be noted that while the year-on-year rates of change in the volume index of retail sales have been changed in the re-referenced series relative to those with October 2009 to September 2010 as the base period, the corresponding year-on-year rates of change in the value index of retail sales are not affected.
Please refer to the report "Report on Monthly Survey of Retail Sales" for concepts, methods, definitions of terms and notes relating to the statistics.