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2% 10-YEAR TREASURY INFLATION-PROTECTED SECURITIES (TIPS) Due January 15, 2014

Ref CPI and Index Ratios for December 2006

    Contact: Office of Financing             202-504-3550
     DESCRIPTION:                            Series A-2014
     CUSIP NUMBER:                           912828BW9
     DATED DATE:                             January 15, 2004
     ORIGINAL ISSUE DATE:                    January 15, 2004
     ADDITIONAL ISSUE DATE:                  April 15, 2004
     MATURITY DATE:                          January 15, 2014
     Ref CPI on DATED DATE:                  184.77419
     TABLE FOR MONTH OF:                     December 2006
     NUMBER OF DAYS IN MONTH:                31

     CPI-U (NSA) August 2006                 203.9
     CPI-U (NSA) September 2006              202.9
     CPI-U (NSA) October 2006                201.8

     Month   Calendar Day    Year    Ref CPI       Index Ratio

     December        1       2006    202.90000       1.09810
     December        2       2006    202.86452       1.09791
     December        3       2006    202.82903       1.09771
     December        4       2006    202.79355       1.09752
     December        5       2006    202.75806       1.09733
     December        6       2006    202.72258       1.09714
     December        7       2006    202.68710       1.09694
     December        8       2006    202.65161       1.09675
     December        9       2006    202.61613       1.09656
     December        10      2006    202.58065       1.09637
     December        11      2006    202.54516       1.09618
     December        12      2006    202.50968       1.09598
     December        13      2006    202.47419       1.09579
     December        14      2006    202.43871       1.09560
     December        15      2006    202.40323       1.09541
     December        16      2006    202.36774       1.09522
     December        17      2006    202.33226       1.09502
     December        18      2006    202.29677       1.09483
     December        19      2006    202.26129       1.09464
     December        20      2006    202.22581       1.09445
     December        21      2006    202.19032       1.09426
     December        22      2006    202.15484       1.09406
     December        23      2006    202.11935       1.09387
     December        24      2006    202.08387       1.09368
     December        25      2006    202.04839       1.09349
     December        26      2006    202.01290       1.09330
     December        27      2006    201.97742       1.09310
     December        28      2006    201.94194       1.09291
     December        29      2006    201.90645       1.09272
     December        30      2006    201.87097       1.09253
     December        31      2006    201.83548       1.09234