[Code of Federal Regulations]
[Title 31, Volume 2]
[Revised as of July 1, 2008]
From the U.S. Government Printing Office via GPO Access
[CITE: 31CFR356 App D]

[Page 404]

                  TITLE 31--MONEY AND FINANCE: TREASURY

         CHAPTER II--FISCAL SERVICE, DEPARTMENT OF THE TREASURY

PART 356_SALE AND ISSUE OF MARKETABLE BOOK-ENTRY TREASURY BILLS, NOTES, AND

                   Subpart D_Miscellaneous Provisions

  Sec. Appendix D to Part 356--Description of the Consumer Price Index

    The Consumer Price Index (``CPI'') for purposes of inflation-
protected securities is the non-seasonally adjusted U.S. City Average
All Items Consumer Price Index for All Urban Consumers. It is published
monthly by the Bureau of Labor Statistics (BLS), a bureau within the
Department of Labor. The CPI is a measure of the average change in
consumer prices over time in a fixed market basket of goods and
services. This market basket includes food, clothing, shelter, fuels,
transportation, charges for doctors' and dentists' services, and drugs.
    In calculating the index, price changes for the various items are
averaged together with weights that represent their importance in the
spending of urban households in the United States. The BLS periodically
updates the contents of the market basket of goods and services, and the
weights assigned to the various items, to take into account changes in
consumer expenditure patterns.
    The CPI is expressed in relative terms in relation to a time base
reference period for which the level is set at 100. For example, if the
CPI for the 1982-84 reference period is 100.0, an increase of 16.5
percent from that period would be shown as 116.5. The CPI for a
particular month is released and published during the following month.
From time to time, the CPI is rebased to a more recent base reference
period. We provide the base reference period for a particular inflation-
protected security on the auction announcement for that security.
    Further details about the CPI may be obtained by contacting the BLS.