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1-5/8% 10-YEAR TREASURY INFLATION-PROTECTED SECURITIES (TIPS) Due January 15, 2015

Ref CPI and Index Ratios for July 2007

     Contact: Office of Financing            202-504-3550
     DESCRIPTION:                            Series A-2015
     CUSIP NUMBER:                           912828DH0
     DATED DATE:                             January 15, 2005
     ORIGINAL ISSUE DATE:                    January 18, 2005
     ADDITIONAL ISSUE DATE:                  April 15, 2005
     MATURITY DATE:                          January 15, 2015
     Ref CPI on DATED DATE:                  190.94516
     TABLE FOR MONTH OF:                     July 2007
     NUMBER OF DAYS IN MONTH:                31

     CPI-U (NSA) March 2007                  205.352
     CPI-U (NSA) April 2007                  206.686
     CPI-U (NSA) May 2007                    207.949

     Month   Calendar Day    Year    Ref CPI       Index Ratio

     July            1       2007    206.68600       1.08244
     July            2       2007    206.72674       1.08265
     July            3       2007    206.76748       1.08286
     July            4       2007    206.80823       1.08308
     July            5       2007    206.84897       1.08329
     July            6       2007    206.88971       1.08350
     July            7       2007    206.93045       1.08372
     July            8       2007    206.97119       1.08393
     July            9       2007    207.01194       1.08414
     July            10      2007    207.05268       1.08436
     July            11      2007    207.09342       1.08457
     July            12      2007    207.13416       1.08478
     July            13      2007    207.17490       1.08500
     July            14      2007    207.21565       1.08521
     July            15      2007    207.25639       1.08542
     July            16      2007    207.29713       1.08564
     July            17      2007    207.33787       1.08585
     July            18      2007    207.37861       1.08606
     July            19      2007    207.41935       1.08628
     July            20      2007    207.46010       1.08649
     July            21      2007    207.50084       1.08670
     July            22      2007    207.54158       1.08692
     July            23      2007    207.58232       1.08713
     July            24      2007    207.62306       1.08734
     July            25      2007    207.66381       1.08756
     July            26      2007    207.70455       1.08777
     July            27      2007    207.74529       1.08798
     July            28      2007    207.78603       1.08820
     July            29      2007    207.82677       1.08841
     July            30      2007    207.86752       1.08862
     July            31      2007    207.90826       1.08884