Table 5. Chained Consumer Price Index for All Urban Consumers (C-CPI-U) and the Consumer Price Index for All Urban Consumers (CPI-U): U.S. city average, all items index

Table 5. Chained Consumer Price Index for All Urban Consumers (C-CPI-U) and the Consumer Price Index for All Urban Consumers (CPI-U): U.S. city average, all items index, October 2024 [Percent changes]
Month Year	Unadjusted 1-month percent change		Unadjusted 12-month percent change
Month Year	C-CPI-U(1)	CPI-U	C-CPI-U(1)	CPI-U
December 2011			2.9	3.0
December 2012			1.5	1.7
December 2013			1.3	1.5
December 2014			0.5	0.8
December 2015			0.4	0.7
December 2016			1.8	2.1
December 2017			1.7	2.1
December 2018			1.5	1.9
December 2019			1.8	2.3
December 2020			1.5	1.4
December 2021			6.5	7.0

January 2022	0.8	0.8	6.8	7.5
February 2022	0.9	0.9	7.3	7.9
March 2022	1.4	1.3	8.1	8.5
April 2022	0.6	0.6	7.9	8.3
May 2022	1.1	1.1	8.3	8.6
June 2022	1.2	1.4	8.7	9.1
July 2022	0.0	0.0	8.1	8.5
August 2022	-0.1	0.0	7.9	8.3
September 2022	0.3	0.2	7.9	8.2
October 2022	0.5	0.4	7.6	7.7
November 2022	-0.1	-0.1	7.0	7.1
December 2022	-0.3	-0.3	6.4	6.5
January 2023	0.8	0.8	6.4	6.4
February 2023	0.5	0.6	6.0	6.0
March 2023	0.3	0.3	4.8	5.0
April 2023	0.5	0.5	4.7	4.9
May 2023	0.2	0.3	3.8	4.0
June 2023	0.3	0.3	2.9	3.0
July 2023	0.1	0.2	3.0	3.2
August 2023	0.4	0.4	3.5	3.7
September 2023	0.2	0.2	3.4	3.7
October 2023	0.0	0.0	2.9	3.2
November 2023	-0.3	-0.2	2.7	3.1
December 2023	-0.1	-0.1	2.9	3.4
January 2024	0.5	0.5	2.6	3.1
February 2024	0.6	0.6	2.8	3.2
March 2024	0.7	0.6	3.2	3.5
April 2024	0.4	0.4	3.0	3.4
May 2024	0.2	0.2	3.0	3.3
June 2024	0.0	0.0	2.6	3.0
July 2024	0.1	0.1	2.7	2.9
August 2024	0.1	0.1	2.3	2.5
September 2024	0.1	0.2	2.2	2.4
October 2024	0.1	0.1	2.4	2.6
Footnotes (1) The C-CPI-U is designed to be a closer approximation to a cost-of-living index in that it, in its final form, accounts for any substitution that consumers make across item categories in response to changes in relative prices. Since the expenditure data required for the calculation of the C-CPI-U are available only with a time lag, the C-CPI-U is issued first in preliminary form using the latest available expenditure data at that time and is subject to four revisions.
Indexes are issued as initial estimates. Indexes are revised each quarter with the publication of January, April, July, and October data as updated expenditure estimates become available. The C-CPI-U indexes are updated quarterly until they become final. January-March indexes are final in January of the following year; April-June indexes are final in April of the following year; July-September indexes are final in July of the following year; October-December indexes are final in October of the following year.

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Last Modified Date: November 13, 2024