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0-7/8% 5-1/2-YEAR TREASURY INFLATION-PROTECTED SECURITIES (TIPS)

Ref CPI and Index Ratios for July 2005

Contact: Office of Financing       202-504-3550
DESCRIPTION:                            Series D-2010
CUSIP NUMBER:                           912828CZ1
DATED DATE:                             October 15, 2004
ORIGINAL ISSUE DATE:                    October 29, 2004
ADDITIONAL ISSUE DATE:                  April 29, 2005
MATURITY DATE:                          April 15, 2010
Ref CPI on DATED DATE:                  189.44516
TABLE FOR MONTH OF:                     July 2005
NUMBER OF DAYS IN MONTH:                31

CPI-U (NSA) March 2005                  193.3
CPI-U (NSA) April 2005                  194.6
CPI-U (NSA) May 2005                    194.4

Month   Calendar Day    Year    Ref CPI       Index Ratio

July            1       2005    194.60000       1.02721
July            2       2005    194.59355       1.02718
July            3       2005    194.58710       1.02714
July            4       2005    194.58065       1.02711
July            5       2005    194.57419       1.02707
July            6       2005    194.56774       1.02704
July            7       2005    194.56129       1.02701
July            8       2005    194.55484       1.02697
July            9       2005    194.54839       1.02694
July            10      2005    194.54194       1.02690
July            11      2005    194.53548       1.02687
July            12      2005    194.52903       1.02684
July            13      2005    194.52258       1.02680
July            14      2005    194.51613       1.02677
July            15      2005    194.50968       1.02673
July            16      2005    194.50323       1.02670
July            17      2005    194.49677       1.02667
July            18      2005    194.49032       1.02663
July            19      2005    194.48387       1.02660
July            20      2005    194.47742       1.02656
July            21      2005    194.47097       1.02653
July            22      2005    194.46452       1.02650
July            23      2005    194.45806       1.02646
July            24      2005    194.45161       1.02643
July            25      2005    194.44516       1.02639
July            26      2005    194.43871       1.02636
July            27      2005    194.43226       1.02632
July            28      2005    194.42581       1.02629
July            29      2005    194.41935       1.02626
July            30      2005    194.41290       1.02622
July            31      2005    194.40645       1.02619