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

Ref CPI and Index Ratios for September 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:                     September 2011
    NUMBER OF DAYS IN MONTH:                30

    CPI-U (NSA) May 2011                    225.964
    CPI-U (NSA) June 2011                   225.722
    CPI-U (NSA) July 2011                   225.922

    Month   Calendar Day   Year    Ref CPI      Index Ratio

    September      1       2011    225.72200       1.11770
    September      2       2011    225.72867       1.11774
    September      3       2011    225.73533       1.11777
    September      4       2011    225.74200       1.11780
    September      5       2011    225.74867       1.11784
    September      6       2011    225.75533       1.11787
    September      7       2011    225.76200       1.11790
    September      8       2011    225.76867       1.11793
    September      9       2011    225.77533       1.11797
    September      10      2011    225.78200       1.11800
    September      11      2011    225.78867       1.11803
    September      12      2011    225.79533       1.11807
    September      13      2011    225.80200       1.11810
    September      14      2011    225.80867       1.11813
    September      15      2011    225.81533       1.11817
    September      16      2011    225.82200       1.11820
    September      17      2011    225.82867       1.11823
    September      18      2011    225.83533       1.11826
    September      19      2011    225.84200       1.11830
    September      20      2011    225.84867       1.11833
    September      21      2011    225.85533       1.11836
    September      22      2011    225.86200       1.11840
    September      23      2011    225.86867       1.11843
    September      24      2011    225.87533       1.11846
    September      25      2011    225.88200       1.11850
    September      26      2011    225.88867       1.11853
    September      27      2011    225.89533       1.11856
    September      28      2011    225.90200       1.11859
    September      29      2011    225.90867       1.11863
    September      30      2011    225.91533       1.11866