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

Ref CPI and Index Ratios for October 2006

    Contact: Office of Financing             202-504-3550
     DESCRIPTION:                            Series C-2012
     CUSIP NUMBER:                           912828AF7
     DATED DATE:                             July 15, 2002
     ORIGINAL ISSUE DATE:                    July 15, 2002
     ADDITIONAL ISSUE DATE:                  October 15, 2002
                                             January 15, 2003
     MATURITY DATE:                          July 15, 2012
     Ref CPI on DATED DATE:                  179.80000
     TABLE FOR MONTH OF:                     October 2006
     NUMBER OF DAYS IN MONTH:                31

     CPI-U (NSA) June 2006                   202.9
     CPI-U (NSA) July 2006                   203.5
     CPI-U (NSA) August 2006                 203.9

     Month   Calendar Day    Year    Ref CPI      Index Ratio

     October        1       2006    203.50000       1.13181
     October        2       2006    203.51290       1.13188
     October        3       2006    203.52581       1.13196
     October        4       2006    203.53871       1.13203
     October        5       2006    203.55161       1.13210
     October        6       2006    203.56452       1.13217
     October        7       2006    203.57742       1.13224
     October        8       2006    203.59032       1.13232
     October        9       2006    203.60323       1.13239
     October        10      2006    203.61613       1.13246
     October        11      2006    203.62903       1.13253
     October        12      2006    203.64194       1.13260
     October        13      2006    203.65484       1.13267
     October        14      2006    203.66774       1.13275
     October        15      2006    203.68065       1.13282
     October        16      2006    203.69355       1.13289
     October        17      2006    203.70645       1.13296
     October        18      2006    203.71935       1.13303
     October        19      2006    203.73226       1.13310
     October        20      2006    203.74516       1.13318
     October        21      2006    203.75806       1.13325
     October        22      2006    203.77097       1.13332
     October        23      2006    203.78387       1.13339
     October        24      2006    203.79677       1.13346
     October        25      2006    203.80968       1.13354
     October        26      2006    203.82258       1.13361
     October        27      2006    203.83548       1.13368
     October        28      2006    203.84839       1.13375
     October        29      2006    203.86129       1.13382
     October        30      2006    203.87419       1.13389
     October        31      2006    203.88710       1.13397