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3-5/8% 30-YEAR TREASURY INFLATION-PROTECTED SECURITIES (TIPS)

Ref CPI and Index Ratios for March 2005

Contact: Office of Financing       202-504-3550
DESCRIPTION:                            TIPS of April 2028
CUSIP NUMBER:                           912810FD5
DATED DATE:                             April 15, 1998
ORIGINAL ISSUE DATE:                    April 15, 1998
ADDITIONAL ISSUE DATE:                  July 15, 1998
MATURITY DATE:                          April 15, 2028
Ref CPI on DATED DATE:                  161.74000
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       1.17658
March           2       2005    190.31290       1.17666
March           3       2005    190.32581       1.17674
March           4       2005    190.33871       1.17682
March           5       2005    190.35161       1.17690
March           6       2005    190.36452       1.17698
March           7       2005    190.37742       1.17706
March           8       2005    190.39032       1.17714
March           9       2005    190.40323       1.17722
March           10      2005    190.41613       1.17730
March           11      2005    190.42903       1.17738
March           12      2005    190.44194       1.17746
March           13      2005    190.45484       1.17754
March           14      2005    190.46774       1.17762
March           15      2005    190.48065       1.17770
March           16      2005    190.49355       1.17778
March           17      2005    190.50645       1.17786
March           18      2005    190.51935       1.17794
March           19      2005    190.53226       1.17802
March           20      2005    190.54516       1.17810
March           21      2005    190.55806       1.17818
March           22      2005    190.57097       1.17826
March           23      2005    190.58387       1.17833
March           24      2005    190.59677       1.17841
March           25      2005    190.60968       1.17849
March           26      2005    190.62258       1.17857
March           27      2005    190.63548       1.17865
March           28      2005    190.64839       1.17873
March           29      2005    190.66129       1.17881
March           30      2005    190.67419       1.17889
March           31      2005    190.68710       1.17897