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

Ref CPI and Index Ratios for December 2009

    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:                     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       1.11033
    December       2       2009    215.97571       1.11036
    December       3       2009    215.98242       1.11039
    December       4       2009    215.98913       1.11043
    December       5       2009    215.99584       1.11046
    December       6       2009    216.00255       1.11050
    December       7       2009    216.00926       1.11053
    December       8       2009    216.01597       1.11057
    December       9       2009    216.02268       1.11060
    December       10      2009    216.02939       1.11064
    December       11      2009    216.03610       1.11067
    December       12      2009    216.04281       1.11070
    December       13      2009    216.04952       1.11074
    December       14      2009    216.05623       1.11077
    December       15      2009    216.06294       1.11081
    December       16      2009    216.06965       1.11084
    December       17      2009    216.07635       1.11088
    December       18      2009    216.08306       1.11091
    December       19      2009    216.08977       1.11095
    December       20      2009    216.09648       1.11098
    December       21      2009    216.10319       1.11102
    December       22      2009    216.10990       1.11105
    December       23      2009    216.11661       1.11108
    December       24      2009    216.12332       1.11112
    December       25      2009    216.13003       1.11115
    December       26      2009    216.13674       1.11119
    December       27      2009    216.14345       1.11122
    December       28      2009    216.15016       1.11126
    December       29      2009    216.15687       1.11129
    December       30      2009    216.16358       1.11133
    December       31      2009    216.17029       1.11136