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2-1/2% 10-YEAR TREASURY INFLATION-PROTECTED SECURITIES (TIPS) Due July 15, 2016

Ref CPI and Index Ratios for January 2011

    Contact: Office of Financing            202-504-3550
    DESCRIPTION:                            D-2016
    CUSIP NUMBER:                           912828FL9
    DATED DATE:                             July 15, 2006
    ORIGINAL ISSUE DATE:                    July 17, 2006
    ADDITIONAL ISSUE DATE:                  October 16, 2006
    MATURITY DATE:                          July 15, 2016
    Ref CPI on DATED DATE:                  201.95161
    TABLE FOR MONTH OF:                     January 2011
    NUMBER OF DAYS IN MONTH:                31

    CPI-U (NSA) September 2010              218.439
    CPI-U (NSA) October 2010                218.711
    CPI-U (NSA) November 2010               218.803

    Month   Calendar Day   Year    Ref CPI      Index Ratio

    January        1       2011    218.71100       1.08299
    January        2       2011    218.71397       1.08300
    January        3       2011    218.71694       1.08302
    January        4       2011    218.71990       1.08303
    January        5       2011    218.72287       1.08305
    January        6       2011    218.72584       1.08306
    January        7       2011    218.72881       1.08308
    January        8       2011    218.73177       1.08309
    January        9       2011    218.73474       1.08310
    January        10      2011    218.73771       1.08312
    January        11      2011    218.74068       1.08313
    January        12      2011    218.74365       1.08315
    January        13      2011    218.74661       1.08316
    January        14      2011    218.74958       1.08318
    January        15      2011    218.75255       1.08319
    January        16      2011    218.75552       1.08321
    January        17      2011    218.75848       1.08322
    January        18      2011    218.76145       1.08324
    January        19      2011    218.76442       1.08325
    January        20      2011    218.76739       1.08327
    January        21      2011    218.77035       1.08328
    January        22      2011    218.77332       1.08330
    January        23      2011    218.77629       1.08331
    January        24      2011    218.77926       1.08333
    January        25      2011    218.78223       1.08334
    January        26      2011    218.78519       1.08335
    January        27      2011    218.78816       1.08337
    January        28      2011    218.79113       1.08338
    January        29      2011    218.79410       1.08340
    January        30      2011    218.79706       1.08341
    January        31      2011    218.80003       1.08343