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4-1/4% 10-YEAR TREASURY INFLATION-PROTECTED SECURITIES (TIPS)

Ref CPI and Index Ratios for April 2005

Contact: Office of Financing      202-504-3550
DESCRIPTION:                            Series A-2010
CUSIP NUMBER:                           9128275W8
DATED DATE:                             January 15, 2000
ORIGINAL ISSUE DATE:                    January 18, 2000
ADDITIONAL ISSUE DATE:                  July 17, 2000
MATURITY DATE:                          January 15, 2010
Ref CPI on DATED DATE:                  168.24516
TABLE FOR MONTH OF:                     April 2005
NUMBER OF DAYS IN MONTH:                30
CPI-U (NSA) December 2004               190.3
CPI-U (NSA) January 2005                190.7
CPI-U (NSA) February 2005               191.8

Month   Calendar Day    Year    Ref CPI       Index Ratio

April           1       2005    190.70000       1.13346
April           2       2005    190.73667       1.13368
April           3       2005    190.77333       1.13390
April           4       2005    190.81000       1.13412
April           5       2005    190.84667       1.13434
April           6       2005    190.88333       1.13455
April           7       2005    190.92000       1.13477
April           8       2005    190.95667       1.13499
April           9       2005    190.99333       1.13521
April           10      2005    191.03000       1.13543
April           11      2005    191.06667       1.13564
April           12      2005    191.10333       1.13586
April           13      2005    191.14000       1.13608
April           14      2005    191.17667       1.13630
April           15      2005    191.21333       1.13652
April           16      2005    191.25000       1.13673
April           17      2005    191.28667       1.13695
April           18      2005    191.32333       1.13717
April           19      2005    191.36000       1.13739
April           20      2005    191.39667       1.13761
April           21      2005    191.43333       1.13782
April           22      2005    191.47000       1.13804
April           23      2005    191.50667       1.13826
April           24      2005    191.54333       1.13848
April           25      2005    191.58000       1.13870
April           26      2005    191.61667       1.13891
April           27      2005    191.65333       1.13913
April           28      2005    191.69000       1.13935
April           29      2005    191.72667       1.13957
April           30      2005    191.76333       1.13979