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3-7/8% 10-YEAR TREASURY INFLATION-PROTECTED SECURITIES (TIPS) Due January 15, 2009

Ref CPI and Index Ratios for July 2006

    Contact: Office of Financing      202-504-3550
  DESCRIPTION:                         Series A-2009
  CUSIP NUMBER:                        9128274Y5
  DATED DATE:                          January 15, 1999
  ORIGINAL ISSUE DATE:                 January 15, 1999
  ADDITIONAL ISSUE DATE:               July 15, 1999
  MATURITY DATE:                       January 15, 2009
  Ref CPI on DATED DATE:               164.00000
  TABLE FOR MONTH OF:                  July 2006
  NUMBER OF DAYS IN MONTH:             31

  CPI-U (NSA) March 2006               199.8
  CPI-U (NSA) April 2006               201.5
  CPI-U (NSA) May 2006                 202.5

  Month   Calendar Day    Year    Ref CPI         Index Ratio

  July            1       2006    201.50000       1.22866
  July            2       2006    201.53226       1.22886
  July            3       2006    201.56452       1.22905
  July            4       2006    201.59677       1.22925
  July            5       2006    201.62903       1.22945
  July            6       2006    201.66129       1.22964
  July            7       2006    201.69355       1.22984
  July            8       2006    201.72581       1.23004
  July            9       2006    201.75806       1.23023
  July            10      2006    201.79032       1.23043
  July            11      2006    201.82258       1.23063
  July            12      2006    201.85484       1.23082
  July            13      2006    201.88710       1.23102
  July            14      2006    201.91935       1.23122
  July            15      2006    201.95161       1.23141
  July            16      2006    201.98387       1.23161
  July            17      2006    202.01613       1.23181
  July            18      2006    202.04839       1.23200
  July            19      2006    202.08065       1.23220
  July            20      2006    202.11290       1.23240
  July            21      2006    202.14516       1.23259
  July            22      2006    202.17742       1.23279
  July            23      2006    202.20968       1.23299
  July            24      2006    202.24194       1.23318
  July            25      2006    202.27419       1.23338
  July            26      2006    202.30645       1.23358
  July            27      2006    202.33871       1.23377
  July            28      2006    202.37097       1.23397
  July            29      2006    202.40323       1.23417
  July            30      2006    202.43548       1.23436
  July            31      2006    202.46774       1.23456