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On January 13, 2021, the Consumer Price Index program published incorrect December values for 29 seasonally adjusted CPI-U special relative series in the database. The incorrect data was also published in tables 2 and 6 in the news release, as well as the CPI-U news release companion file. The erroneous data has been removed from the database. For more information on the impacted series and correction plans, please see this errata page.