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3-7/8% 30-YEAR TREASURY INFLATION-PROTECTED SECURITIES (TIPS)

Ref CPI and Index Ratios for May 2005

Contact: Office of Financing       202-504-3550
DESCRIPTION:                            TIPS of April 2029
CUSIP NUMBER:                           912810FH6
DATED DATE:                             April 15, 1999
ORIGINAL ISSUE DATE:                    April 15, 1999
ADDITIONAL ISSUE DATE:                  October 15, 1999
                                        October 16, 2000
MATURITY DATE:                          April 15, 2029
Ref CPI on DATED DATE:                  164.39333
TABLE FOR MONTH OF:                     May 2005
NUMBER OF DAYS IN MONTH:                31

CPI-U (NSA) January 2005                190.7
CPI-U (NSA) February 2005               191.8
CPI-U (NSA) March 2005                  193.3

Month   Calendar Day    Year    Ref CPI       Index Ratio

May             1       2005    191.80000       1.16671
May             2       2005    191.84839       1.16701
May             3       2005    191.89677       1.16730
May             4       2005    191.94516       1.16760
May             5       2005    191.99355       1.16789
May             6       2005    192.04194       1.16819
May             7       2005    192.09032       1.16848
May             8       2005    192.13871       1.16877
May             9       2005    192.18710       1.16907
May             10      2005    192.23548       1.16936
May             11      2005    192.28387       1.16966
May             12      2005    192.33226       1.16995
May             13      2005    192.38065       1.17025
May             14      2005    192.42903       1.17054
May             15      2005    192.47742       1.17083
May             16      2005    192.52581       1.17113
May             17      2005    192.57419       1.17142
May             18      2005    192.62258       1.17172
May             19      2005    192.67097       1.17201
May             20      2005    192.71935       1.17231
May             21      2005    192.76774       1.17260
May             22      2005    192.81613       1.17290
May             23      2005    192.86452       1.17319
May             24      2005    192.91290       1.17348
May             25      2005    192.96129       1.17378
May             26      2005    193.00968       1.17407
May             27      2005    193.05806       1.17437
May             28      2005    193.10645       1.17466
May             29      2005    193.15484       1.17496
May             30      2005    193.20323       1.17525
May             31      2005    193.25161       1.17554