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3-3/8% 10-YEAR TREASURY INFLATION-PROTECTED SECURITIES (TIPS)

Ref CPI and Index Ratios for September 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:                     September 2005
NUMBER OF DAYS IN MONTH:                30

CPI-U (NSA) May 2005                    194.4
CPI-U (NSA) June 2005                   194.5
CPI-U (NSA) July 2005                   195.4

Month   Calendar Day    Year    Ref CPI      Index Ratio

September      1       2005    194.50000       1.22763
September      2       2005    194.53000       1.22782
September      3       2005    194.56000       1.22801
September      4       2005    194.59000       1.22820
September      5       2005    194.62000       1.22839
September      6       2005    194.65000       1.22858
September      7       2005    194.68000       1.22877
September      8       2005    194.71000       1.22895
September      9       2005    194.74000       1.22914
September      10      2005    194.77000       1.22933
September      11      2005    194.80000       1.22952
September      12      2005    194.83000       1.22971
September      13      2005    194.86000       1.22990
September      14      2005    194.89000       1.23009
September      15      2005    194.92000       1.23028
September      16      2005    194.95000       1.23047
September      17      2005    194.98000       1.23066
September      18      2005    195.01000       1.23085
September      19      2005    195.04000       1.23104
September      20      2005    195.07000       1.23123
September      21      2005    195.10000       1.23142
September      22      2005    195.13000       1.23161
September      23      2005    195.16000       1.23179
September      24      2005    195.19000       1.23198
September      25      2005    195.22000       1.23217
September      26      2005    195.25000       1.23236
September      27      2005    195.28000       1.23255
September      28      2005    195.31000       1.23274
September      29      2005    195.34000       1.23293
September      30      2005    195.37000       1.23312