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Consumer Price Index
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Each year with the release of the January CPI, seasonal adjustment factors are recalculated to reflect price movements from the just-completed calendar year. This routine annual recalculation may result in revisions to seasonally adjusted indexes for the previous 5 years. Recalculated seasonally adjusted indexes as well as recalculated seasonal adjustment factors for the period January 2019 through December 2023 were made available on Friday, February 9, 2024. The revised indexes and seasonal factors are available at Seasonal Adjustment in the CPI.
Annual CPI files for 2023 including relative importance tables, response rate tables, and variance tables were also made available on Friday, February 9, 2024.