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The Consumer Price Index (CPI) is the main measure of inflation in the United States and is used to assess price changes associated with the cost of living. The CPI, which is calculated and reported monthly by the U.S. Bureau of Labor Statistics, measures the average change over time in the prices paid by urban consumers for a market basket of consumer goods and services. The Consumer Price Index is calculated nationally and for various regions.
The monthly CPI report breaks down price changes by major categories, including food, energy, transportation, medical care, shelter, and others.
