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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-2012
CUSIP NUMBER:                           9128277J5
DATED DATE:                             January 15, 2002
ORIGINAL ISSUE DATE:                    January 15, 2002
ADDITIONAL ISSUE DATE:                  N/A
MATURITY DATE:                          January 15, 2012
Ref CPI on DATED DATE:                  177.56452
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       1.09538
September      2       2005    194.53000       1.09555
September      3       2005    194.56000       1.09571
September      4       2005    194.59000       1.09588
September      5       2005    194.62000       1.09605
September      6       2005    194.65000       1.09622
September      7       2005    194.68000       1.09639
September      8       2005    194.71000       1.09656
September      9       2005    194.74000       1.09673
September      10      2005    194.77000       1.09690
September      11      2005    194.80000       1.09707
September      12      2005    194.83000       1.09723
September      13      2005    194.86000       1.09740
September      14      2005    194.89000       1.09757
September      15      2005    194.92000       1.09774
September      16      2005    194.95000       1.09791
September      17      2005    194.98000       1.09808
September      18      2005    195.01000       1.09825
September      19      2005    195.04000       1.09842
September      20      2005    195.07000       1.09859
September      21      2005    195.10000       1.09876
September      22      2005    195.13000       1.09892
September      23      2005    195.16000       1.09909
September      24      2005    195.19000       1.09926
September      25      2005    195.22000       1.09943
September      26      2005    195.25000       1.09960
September      27      2005    195.28000       1.09977
September      28      2005    195.31000       1.09994
September      29      2005    195.34000       1.10011
September      30      2005    195.37000       1.10028