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1-7/8% 10-YEAR TREASURY INFLATION-PROTECTED SECURITIES (TIPS) Due July 15, 2015

Ref CPI and Index Ratios for January 2012

    Contact: Office of Financing            202-504-3550
    DESCRIPTION:                            D-2015
    CUSIP NUMBER:                           912828EA4
    DATED DATE:                             July 15, 2005
    ORIGINAL ISSUE DATE:                    July 15, 2005
    ADDITIONAL ISSUE DATE:                  October 17, 2005
    MATURITY DATE:                          July 15, 2015
    Ref CPI on DATED DATE:                  194.50968
    TABLE FOR MONTH OF:                     January 2012
    NUMBER OF DAYS IN MONTH:                31

    CPI-U (NSA) September 2011              226.889
    CPI-U (NSA) October 2011                226.421
    CPI-U (NSA) November 2011               226.230

    Month   Calendar Day   Year    Ref CPI      Index Ratio

    January        1       2012    226.42100       1.16406
    January        2       2012    226.41484       1.16403
    January        3       2012    226.40868       1.16400
    January        4       2012    226.40252       1.16397
    January        5       2012    226.39635       1.16393
    January        6       2012    226.39019       1.16390
    January        7       2012    226.38403       1.16387
    January        8       2012    226.37787       1.16384
    January        9       2012    226.37171       1.16381
    January        10      2012    226.36555       1.16378
    January        11      2012    226.35939       1.16374
    January        12      2012    226.35323       1.16371
    January        13      2012    226.34706       1.16368
    January        14      2012    226.34090       1.16365
    January        15      2012    226.33474       1.16362
    January        16      2012    226.32858       1.16359
    January        17      2012    226.32242       1.16355
    January        18      2012    226.31626       1.16352
    January        19      2012    226.31010       1.16349
    January        20      2012    226.30394       1.16346
    January        21      2012    226.29777       1.16343
    January        22      2012    226.29161       1.16340
    January        23      2012    226.28545       1.16336
    January        24      2012    226.27929       1.16333
    January        25      2012    226.27313       1.16330
    January        26      2012    226.26697       1.16327
    January        27      2012    226.26081       1.16324
    January        28      2012    226.25465       1.16321
    January        29      2012    226.24848       1.16317
    January        30      2012    226.24232       1.16314
    January        31      2012    226.23616       1.16311