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

Ref CPI and Index Ratios for October 2005

Contact: Office of Financing       202-504-3550
DESCRIPTION:                           Series C-2012
CUSIP NUMBER:                          912828AF7
DATED DATE:                            July 15, 2002
ORIGINAL ISSUE DATE:                   July 15, 2002
ADDITIONAL ISSUE DATE:                 October 15, 2002
                                       January 15, 2003
MATURITY DATE:                         July 15, 2012
Ref CPI on DATED DATE:                 179.80000
TABLE FOR MONTH OF:                    October 2005
NUMBER OF DAYS IN MONTH:               31

CPI-U (NSA) June 2005                  194.5
CPI-U (NSA) July 2005                  195.4
CPI-U (NSA) August 2005                196.4

Month   Calendar Day    Year    Ref CPI      Index Ratio

October        1       2005    195.40000       1.08676
October        2       2005    195.43226       1.08694
October        3       2005    195.46452       1.08712
October        4       2005    195.49677       1.08730
October        5       2005    195.52903       1.08748
October        6       2005    195.56129       1.08766
October        7       2005    195.59355       1.08784
October        8       2005    195.62581       1.08802
October        9       2005    195.65806       1.08820
October        10      2005    195.69032       1.08838
October        11      2005    195.72258       1.08856
October        12      2005    195.75484       1.08874
October        13      2005    195.78710       1.08892
October        14      2005    195.81935       1.08910
October        15      2005    195.85161       1.08927
October        16      2005    195.88387       1.08945
October        17      2005    195.91613       1.08963
October        18      2005    195.94839       1.08981
October        19      2005    195.98065       1.08999
October        20      2005    196.01290       1.09017
October        21      2005    196.04516       1.09035
October        22      2005    196.07742       1.09053
October        23      2005    196.10968       1.09071
October        24      2005    196.14194       1.09089
October        25      2005    196.17419       1.09107
October        26      2005    196.20645       1.09125
October        27      2005    196.23871       1.09143
October        28      2005    196.27097       1.09161
October        29      2005    196.30323       1.09179
October        30      2005    196.33548       1.09197
October        31      2005    196.36774       1.09215