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3-3/8% 10-YEAR TREASURY INFLATION-PROTECTED SECURITIES (TIPS)

Ref CPI and Index Ratios for March 2005

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:                     March 2005
NUMBER OF DAYS IN MONTH:                31

CPI-U (NSA) November 2004               191.0
CPI-U (NSA) December 2004               190.3
CPI-U (NSA) January 2005                190.7

Month   Calendar Day    Year    Ref CPI       Index Ratio

March           1       2005    190.30000       1.07172
March           2       2005    190.31290       1.07180
March           3       2005    190.32581       1.07187
March           4       2005    190.33871       1.07194
March           5       2005    190.35161       1.07201
March           6       2005    190.36452       1.07209
March           7       2005    190.37742       1.07216
March           8       2005    190.39032       1.07223
March           9       2005    190.40323       1.07230
March           10      2005    190.41613       1.07238
March           11      2005    190.42903       1.07245
March           12      2005    190.44194       1.07252
March           13      2005    190.45484       1.07260
March           14      2005    190.46774       1.07267
March           15      2005    190.48065       1.07274
March           16      2005    190.49355       1.07281
March           17      2005    190.50645       1.07289
March           18      2005    190.51935       1.07296
March           19      2005    190.53226       1.07303
March           20      2005    190.54516       1.07310
March           21      2005    190.55806       1.07318
March           22      2005    190.57097       1.07325
March           23      2005    190.58387       1.07332
March           24      2005    190.59677       1.07339
March           25      2005    190.60968       1.07347
March           26      2005    190.62258       1.07354
March           27      2005    190.63548       1.07361
March           28      2005    190.64839       1.07369
March           29      2005    190.66129       1.07376
March           30      2005    190.67419       1.07383
March           31      2005    190.68710       1.07390