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3-1/2% 10-YEAR TREASURY INFLATION-PROTECTED SECURITIES (TIPS)

Ref CPI and Index Ratios for May 2005

Contact: Office of Financing      202-504-3550
DESCRIPTION:                            Series A-2011
CUSIP NUMBER:                           9128276R8
DATED DATE:                             January 15, 2001
ORIGINAL ISSUE DATE:                    January 16, 2001
ADDITIONAL ISSUE DATE:                  July 16, 2001
MATURITY DATE:                          January 15, 2011
Ref CPI on DATED DATE:                  174.04516
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       1.10201
May             2       2005    191.84839       1.10229
May             3       2005    191.89677       1.10257
May             4       2005    191.94516       1.10285
May             5       2005    191.99355       1.10312
May             6       2005    192.04194       1.10340
May             7       2005    192.09032       1.10368
May             8       2005    192.13871       1.10396
May             9       2005    192.18710       1.10424
May             10      2005    192.23548       1.10451
May             11      2005    192.28387       1.10479
May             12      2005    192.33226       1.10507
May             13      2005    192.38065       1.10535
May             14      2005    192.42903       1.10563
May             15      2005    192.47742       1.10591
May             16      2005    192.52581       1.10618
May             17      2005    192.57419       1.10646
May             18      2005    192.62258       1.10674
May             19      2005    192.67097       1.10702
May             20      2005    192.71935       1.10730
May             21      2005    192.76774       1.10757
May             22      2005    192.81613       1.10785
May             23      2005    192.86452       1.10813
May             24      2005    192.91290       1.10841
May             25      2005    192.96129       1.10869
May             26      2005    193.00968       1.10896
May             27      2005    193.05806       1.10924
May             28      2005    193.10645       1.10952
May             29      2005    193.15484       1.10980
May             30      2005    193.20323       1.11008
May             31      2005    193.25161       1.11035