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

Ref CPI and Index Ratios for March 2005

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:                     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       1.05840
March           2       2005    190.31290       1.05847
March           3       2005    190.32581       1.05854
March           4       2005    190.33871       1.05861
March           5       2005    190.35161       1.05869
March           6       2005    190.36452       1.05876
March           7       2005    190.37742       1.05883
March           8       2005    190.39032       1.05890
March           9       2005    190.40323       1.05897
March           10      2005    190.41613       1.05904
March           11      2005    190.42903       1.05912
March           12      2005    190.44194       1.05919
March           13      2005    190.45484       1.05926
March           14      2005    190.46774       1.05933
March           15      2005    190.48065       1.05940
March           16      2005    190.49355       1.05947
March           17      2005    190.50645       1.05955
March           18      2005    190.51935       1.05962
March           19      2005    190.53226       1.05969
March           20      2005    190.54516       1.05976
March           21      2005    190.55806       1.05983
March           22      2005    190.57097       1.05991
March           23      2005    190.58387       1.05998
March           24      2005    190.59677       1.06005
March           25      2005    190.60968       1.06012
March           26      2005    190.62258       1.06019
March           27      2005    190.63548       1.06026
March           28      2005    190.64839       1.06034
March           29      2005    190.66129       1.06041
March           30      2005    190.67419       1.06048
March           31      2005    190.68710       1.06055