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3-7/8% TREASURY 10-YEAR INFLATION-INDEXED NOTES

Ref CPI and Index Ratios for May 2000

Contact: Office of Financing      202-504-3550

DESCRIPTION:                            Series A-2009
CUSIP NUMBER:                           9128274Y5
DATED DATE:                             January 15, 1999
ORIGINAL ISSUE DATE:                    January 15, 1999
ADDITIONAL ISSUE DATE:                  July 15, 1999
MATURITY DATE:                          January 15, 2009
Ref CPI on DATED DATE:                  164.00000
TABLE FOR MONTH OF:                     May 2000
NUMBER OF DAYS IN MONTH:                31

CPI-U (NSA) January 2000                168.7
CPI-U (NSA) February 2000               169.7
CPI-U (NSA) March 2000                  171.1

Month   Calendar Day    Year    Ref CPI       Index Ratio

May             1       2000    169.70000       1.03476
May             2       2000    169.74516       1.03503
May             3       2000    169.79032       1.03531
May             4       2000    169.83548       1.03558
May             5       2000    169.88065       1.03586
May             6       2000    169.92581       1.03613
May             7       2000    169.97097       1.03641
May             8       2000    170.01613       1.03668
May             9       2000    170.06129       1.03696
May             10      2000    170.10645       1.03723
May             11      2000    170.15161       1.03751
May             12      2000    170.19677       1.03779
May             13      2000    170.24194       1.03806
May             14      2000    170.28710       1.03834
May             15      2000    170.33226       1.03861
May             16      2000    170.37742       1.03889
May             17      2000    170.42258       1.03916
May             18      2000    170.46774       1.03944
May             19      2000    170.51290       1.03971
May             20      2000    170.55806       1.03999
May             21      2000    170.60323       1.04026
May             22      2000    170.64839       1.04054
May             23      2000    170.69355       1.04081
May             24      2000    170.73871       1.04109
May             25      2000    170.78387       1.04137
May             26      2000    170.82903       1.04164
May             27      2000    170.87419       1.04192
May             28      2000    170.91935       1.04219
May             29      2000    170.96452       1.04247
May             30      2000    171.00968       1.04274
May             31      2000    171.05484       1.04302