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3-3/8% 10-YEAR TREASURY INFLATION-PROTECTED SECURITIES (TIPS) Due January 15, 2012

Ref CPI and Index Ratios for January 2007

    Contact: Office of Financing             202-504-3550
     DESCRIPTION:                            Series A-2012
     CUSIP NUMBER:                           9128277J5
     DATED DATE:                             January 15, 2002
     ORIGINAL ISSUE DATE:                    January 15, 2002
     ADDITIONAL ISSUE DATE:                  N/A
     MATURITY DATE:                          January 15, 2012
     Ref CPI on DATED DATE:                  177.56452
     TABLE FOR MONTH OF:                     January 2007
     NUMBER OF DAYS IN MONTH:                31

     CPI-U (NSA) September 2006              202.9
     CPI-U (NSA) October 2006                201.8
     CPI-U (NSA) November 2006               201.5

     Month   Calendar Day    Year    Ref CPI       Index Ratio

     January         1       2007    201.80000       1.13649
     January         2       2007    201.79032       1.13643
     January         3       2007    201.78065       1.13638
     January         4       2007    201.77097       1.13632
     January         5       2007    201.76129       1.13627
     January         6       2007    201.75161       1.13622
     January         7       2007    201.74194       1.13616
     January         8       2007    201.73226       1.13611
     January         9       2007    201.72258       1.13605
     January         10      2007    201.71290       1.13600
     January         11      2007    201.70323       1.13594
     January         12      2007    201.69355       1.13589
     January         13      2007    201.68387       1.13583
     January         14      2007    201.67419       1.13578
     January         15      2007    201.66452       1.13573
     January         16      2007    201.65484       1.13567
     January         17      2007    201.64516       1.13562
     January         18      2007    201.63548       1.13556
     January         19      2007    201.62581       1.13551
     January         20      2007    201.61613       1.13545
     January         21      2007    201.60645       1.13540
     January         22      2007    201.59677       1.13534
     January         23      2007    201.58710       1.13529
     January         24      2007    201.57742       1.13523
     January         25      2007    201.56774       1.13518
     January         26      2007    201.55806       1.13513
     January         27      2007    201.54839       1.13507
     January         28      2007    201.53871       1.13502
     January         29      2007    201.52903       1.13496
     January         30      2007    201.51935       1.13491
     January         31      2007    201.50968       1.13485