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

Ref CPI and Index Ratios for March 2007

     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:                     March 2007
     NUMBER OF DAYS IN MONTH:                31

     CPI-U (NSA) November 2006               201.5
     CPI-U (NSA) December 2006               201.8
     CPI-U (NSA) January 2007                202.416

     Month    Calendar Day   Year    Ref CPI       Index Ratio

     March           1       2007    201.80000       1.09214
     March           2       2007    201.81987       1.09225
     March           3       2007    201.83974       1.09236
     March           4       2007    201.85961       1.09247
     March           5       2007    201.87948       1.09257
     March           6       2007    201.89935       1.09268
     March           7       2007    201.91923       1.09279
     March           8       2007    201.93910       1.09290
     March           9       2007    201.95897       1.09300
     March           10      2007    201.97884       1.09311
     March           11      2007    201.99871       1.09322
     March           12      2007    202.01858       1.09333
     March           13      2007    202.03845       1.09343
     March           14      2007    202.05832       1.09354
     March           15      2007    202.07819       1.09365
     March           16      2007    202.09806       1.09376
     March           17      2007    202.11794       1.09386
     March           18      2007    202.13781       1.09397
     March           19      2007    202.15768       1.09408
     March           20      2007    202.17755       1.09419
     March           21      2007    202.19742       1.09429
     March           22      2007    202.21729       1.09440
     March           23      2007    202.23716       1.09451
     March           24      2007    202.25703       1.09462
     March           25      2007    202.27690       1.09472
     March           26      2007    202.29677       1.09483
     March           27      2007    202.31665       1.09494
     March           28      2007    202.33652       1.09505
     March           29      2007    202.35639       1.09516
     March           30      2007    202.37626       1.09526
     March           31      2007    202.39613       1.09537