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3-3/8% 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-2007
CUSIP NUMBER:                           9128272M3
DATED DATE:                             January 15, 1997
ORIGINAL ISSUE DATE:                    February 6, 1997
ADDITIONAL ISSUE DATE:                  April 15, 1997
MATURITY DATE:                          January 15, 2007
Ref CPI on DATED DATE:                  158.43548
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       1.20364
April           2       2005    190.73667       1.20388
April           3       2005    190.77333       1.20411
April           4       2005    190.81000       1.20434
April           5       2005    190.84667       1.20457
April           6       2005    190.88333       1.20480
April           7       2005    190.92000       1.20503
April           8       2005    190.95667       1.20526
April           9       2005    190.99333       1.20550
April           10      2005    191.03000       1.20573
April           11      2005    191.06667       1.20596
April           12      2005    191.10333       1.20619
April           13      2005    191.14000       1.20642
April           14      2005    191.17667       1.20665
April           15      2005    191.21333       1.20688
April           16      2005    191.25000       1.20712
April           17      2005    191.28667       1.20735
April           18      2005    191.32333       1.20758
April           19      2005    191.36000       1.20781
April           20      2005    191.39667       1.20804
April           21      2005    191.43333       1.20827
April           22      2005    191.47000       1.20850
April           23      2005    191.50667       1.20874
April           24      2005    191.54333       1.20897
April           25      2005    191.58000       1.20920
April           26      2005    191.61667       1.20943
April           27      2005    191.65333       1.20966
April           28      2005    191.69000       1.20989
April           29      2005    191.72667       1.21012
April           30      2005    191.76333       1.21036