Until 2007, the Bureau of Labor Statistics rounded CPI index values to one decimal place; beginning in 2007, it published new CPI data to three decimal places, effectively eliminating the base-related rounding problem for new data.
Notes on verification
Confirmed directly by BLS's own official chronology and news release, plus independent corroboration from CRS, Federal Reserve, and Treasury sources. No contradicting evidence found. [tier=silver indep_score=0.925 clusters=2 claim_tier=notable]
Sources
- Was There a Great Moderation for Inflation Volatility? (seed:economics_and_business)
- Chronology of changes in the Consumer Price Index (seed:economics_and_business)
- https://www.bls.gov/cpi/factsheets/cpi-math-calculations.pdf (corroboration)
- https://www.everycrsreport.com/reports/RL30074.html (corroboration)
- https://www.bls.gov/osmr/research-papers/2006/pdf/ec060090.pdf (corroboration)
- https://www.bls.gov/news.release/archives/cpi_02212007.pdf (corroboration)