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3-7/8% 10-YEAR TREASURY INFLATION-PROTECTED SECURITIES (TIPS) Due January 15, 2009

Ref CPI and Index Ratios for October 2006

    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:                     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       1.24085
   October        2       2006    203.51290       1.24093
   October        3       2006    203.52581       1.24101
   October        4       2006    203.53871       1.24109
   October        5       2006    203.55161       1.24117
   October        6       2006    203.56452       1.24125
   October        7       2006    203.57742       1.24133
   October        8       2006    203.59032       1.24140
   October        9       2006    203.60323       1.24148
   October        10      2006    203.61613       1.24156
   October        11      2006    203.62903       1.24164
   October        12      2006    203.64194       1.24172
   October        13      2006    203.65484       1.24180
   October        14      2006    203.66774       1.24188
   October        15      2006    203.68065       1.24196
   October        16      2006    203.69355       1.24203
   October        17      2006    203.70645       1.24211
   October        18      2006    203.71935       1.24219
   October        19      2006    203.73226       1.24227
   October        20      2006    203.74516       1.24235
   October        21      2006    203.75806       1.24243
   October        22      2006    203.77097       1.24251
   October        23      2006    203.78387       1.24258
   October        24      2006    203.79677       1.24266
   October        25      2006    203.80968       1.24274
   October        26      2006    203.82258       1.24282
   October        27      2006    203.83548       1.24290
   October        28      2006    203.84839       1.24298
   October        29      2006    203.86129       1.24306
   October        30      2006    203.87419       1.24314
   October        31      2006    203.88710       1.24321