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BLS 11-99
FOR RELEASE:
Thursday, August 18th, 2011


CONSUMER PRICE INDEX, PHOENIX – FIRST HALF 2011
AREA PRICES UP 2.1 PERCENT OVER THE PAST SIX MONTHS, UP 2.2 PERCENT FROM A YEAR AGO

Prices in the greater Phoenix area, as measured by the Consumer Price Index for All Urban Consumers (CPI-U), increased 2.1 percent in the first half of 2011, the U.S. Bureau of Labor Statistics reported today. (See table A.) Regional Commissioner Richard J. Holden noted that this latest six-month period increase was influenced by higher prices for gasoline and to a lesser extent, medical care and apparel. (Data in this report are not seasonally adjusted. Accordingly, six-month-to-six-month changes may reflect seasonal influences.)

Over the past 12 months, the CPI-U rose 2.2 percent. (See chart 1.) Energy prices increased 15.4 percent, mainly due to an increase in gasoline prices. The index for all items less food and energy advanced 0.7 percent over the past year.

Chart 1. Over-the-year percent change in CPI-U, Phoenix, First half of 2008 – First half of 2011

Chart 1. Over-the-year percent change in CPI-U, Phoenix, First half of 2008 – First half of 2011

Food

Food prices increased 2.5 percent in the first half of 2011. (See table 1.) Prices for food at home rose 3.0 percent for the past six months, and prices for food away from home increased 0.8 percent for the same period.

For the year ending in the first half of 2011, food prices increased 2.6 percent. Prices move up 2.3 percent for both food at home and food away from home increased.

Energy

The energy index jumped 9.4 percent since the second half of 2010. This increase was influenced by higher prices for gasoline (25.3 percent). Partly offsetting the increase were lower prices for electricity (-8.6 percent) and natural gas service (-2.7 percent).

Energy prices rose 15.4 percent over the year, strongly influenced by a 26.2 percent increase in gasoline prices. Electricity prices rose 3.0 percent while natural gas service prices fell 5.7 percent during the past year.

All items less food and energy

The index for all items less food and energy increased 1.0 percent from the second half of 2010 to the first half of 2011. Among the index components, increases were recorded for apparel (4.7 percent.), recreation (3.3 percent), medical care (1.9 percent), and household furnishings and operations (1.8 percent). By contrast, lower prices were recorded for education and communication (-1.1 percent), other goods and services (-0.3 percent), and shelter (-0.2 percent).

Over the year, the index for all items less food and energy advanced 0.7 percent. Prices increased for medical care (2.7 percent), apparel (2.1 percent), and recreation (2.0 percent). Price decreases were noted for shelter (-1.2 percent) and other goods and services (-0.5 percent), while education and communication prices were unchanged over the past year.

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Table A. Phoenix CPI-U semi-annual and annual percent changes (not seasonally adjusted)
Month 2006 2007 2008 2009 2010 2011
Semi-annual Annual Semi-annual Annual Semi-annual Annual Semi-annual Annual Semi-annual Annual Semi-annual Annual

First Half

1.3 3.1 2.0 3.6 2.5 3.8 -1.9 -1.3 0.3 0.7 2.1 2.2

Second Half

1.5 2.8 1.3 3.3 0.6 3.1 0.4 -1.5 0.4 0.1

CPI-W

In the first half of 2011, the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W) in Phoenix was 120.928, up 2.3 percent. The CPI-W increased 2.5 percent over the year.

The first half of 2011 Consumer Price Index for Phoenix is scheduled to be released on August 18th, 2011, at 10:00 a.m. (PST).

Technical Note

The Consumer Price Index (CPI) is a measure of the average change in prices over time in a fixed market basket of goods and services. The Bureau of Labor Statistics publishes CPIs for two population groups: (1) a CPI for All Urban Consumers (CPI-U) which covers approximately 87 percent of the total population and (2) a CPI for Urban Wage Earners and Clerical Workers (CPI-W) which covers 32 percent of the total population. The CPI-U includes, in addition to wage earners and clerical workers, groups such as professional, managerial, and technical workers, the self-employed, short-term workers, the unemployed, and retirees and others not in the labor force.

The CPI is based on prices of food, clothing, shelter, and fuels, transportation fares, charges for doctors' and dentists' services, drugs, and the other goods and services that people buy for day-to-day living. Each month, prices are collected in 87 urban areas across the country from about 4,000 housing units and approximately 25,000 retail establishments--department stores, supermarkets, hospitals, filling stations, and other types of stores and service establishments. All taxes directly associated with the purchase and use of items are included in the index.

The index measures price changes from a designated reference date (1982-84) that equals 100.0. An increase of 16.5 percent, for example, is shown as 116.5. This change can also be expressed in dollars as follows: the price of a base period "market basket" of goods and services in the CPI has risen from $10 in 1982-84 to $11.65. For further details see the CPI home page on the Internet at www.bls.gov/cpi and the BLS Handbook of Methods, Chapter 17, The Consumer Price Index, available on the Internet at www.bls.gov/opub/hom/homch17_a.htm.

In calculating the index, price changes for the various items in each location are averaged together with weights that represent their importance in the spending of the appropriate population group. Local data are then combined to obtain a U.S. city average. Because the sample size of a local area is smaller, the local area index is subject to substantially more sampling and other measurement error than the national index. In addition, local indexes are not adjusted for seasonal influences. As a result, local area indexes show greater volatility than the national index, although their long-term trends are quite similar. NOTE: Area indexes do not measure differences in the level of prices between cities; they only measure the average change in prices for each area since the base period.

The Phoenix-Mesa, AZ. metropolitan area covered in this release is comprised of Maricopa and Pinal Counties in the State of Arizona.

Information in this release will be made available to sensory impaired individuals upon request. Voice phone: 202-691-5200; TDD message referral phone number: 1-800-877-8339.

For personal assistance or further information on Consumer Price Indexes, as well as other Bureau products, contact the San Francisco Information Office at (415) 625-2270 from 9:00 a.m. to 11:30 a.m. and 1:30 p.m. to 4:00 p.m. PT.

 

Please click here for a text formatted copy of the table issued with this release.

 

Last Modified Date: August 18, 2011