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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 2007

   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 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       1.26028
   July            2       2007    206.72674       1.26053
   July            3       2007    206.76748       1.26078
   July            4       2007    206.80823       1.26103
   July            5       2007    206.84897       1.26127
   July            6       2007    206.88971       1.26152
   July            7       2007    206.93045       1.26177
   July            8       2007    206.97119       1.26202
   July            9       2007    207.01194       1.26227
   July            10      2007    207.05268       1.26252
   July            11      2007    207.09342       1.26276
   July            12      2007    207.13416       1.26301
   July            13      2007    207.17490       1.26326
   July            14      2007    207.21565       1.26351
   July            15      2007    207.25639       1.26376
   July            16      2007    207.29713       1.26401
   July            17      2007    207.33787       1.26426
   July            18      2007    207.37861       1.26450
   July            19      2007    207.41935       1.26475
   July            20      2007    207.46010       1.26500
   July            21      2007    207.50084       1.26525
   July            22      2007    207.54158       1.26550
   July            23      2007    207.58232       1.26575
   July            24      2007    207.62306       1.26599
   July            25      2007    207.66381       1.26624
   July            26      2007    207.70455       1.26649
   July            27      2007    207.74529       1.26674
   July            28      2007    207.78603       1.26699
   July            29      2007    207.82677       1.26724
   July            30      2007    207.86752       1.26748
   July            31      2007    207.90826       1.26773