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

Ref CPI and Index Ratios for December 2009

    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:                     December 2009
    NUMBER OF DAYS IN MONTH:                31

    CPI-U (NSA) August 2009                 215.834
    CPI-U (NSA) September 2009              215.969
    CPI-U (NSA) October 2009                216.177

    Month   Calendar Day   Year    Ref CPI      Index Ratio

    December       1       2009    215.96900       1.06941
    December       2       2009    215.97571       1.06944
    December       3       2009    215.98242       1.06948
    December       4       2009    215.98913       1.06951
    December       5       2009    215.99584       1.06954
    December       6       2009    216.00255       1.06958
    December       7       2009    216.00926       1.06961
    December       8       2009    216.01597       1.06964
    December       9       2009    216.02268       1.06968
    December       10      2009    216.02939       1.06971
    December       11      2009    216.03610       1.06974
    December       12      2009    216.04281       1.06978
    December       13      2009    216.04952       1.06981
    December       14      2009    216.05623       1.06984
    December       15      2009    216.06294       1.06987
    December       16      2009    216.06965       1.06991
    December       17      2009    216.07635       1.06994
    December       18      2009    216.08306       1.06997
    December       19      2009    216.08977       1.07001
    December       20      2009    216.09648       1.07004
    December       21      2009    216.10319       1.07007
    December       22      2009    216.10990       1.07011
    December       23      2009    216.11661       1.07014
    December       24      2009    216.12332       1.07017
    December       25      2009    216.13003       1.07021
    December       26      2009    216.13674       1.07024
    December       27      2009    216.14345       1.07027
    December       28      2009    216.15016       1.07031
    December       29      2009    216.15687       1.07034
    December       30      2009    216.16358       1.07037
    December       31      2009    216.17029       1.07041