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0-7/8% 5-1/2-YEAR TREASURY INFLATION-PROTECTED SECURITIES Due April 15, 2010

Ref CPI and Index Ratios for October 2007

    Contact: Office of Financing            202-504-3550
    DESCRIPTION:                            Series D-2010
    CUSIP NUMBER:                           912828CZ1
    DATED DATE:                             October 15, 2004
    ORIGINAL ISSUE DATE:                    October 29, 2004
    ADDITIONAL ISSUE DATE:                  April 29, 2005
                                            October 28, 2005
    MATURITY DATE:                          April 15, 2010
    Ref CPI on DATED DATE:                  189.44516
    TABLE FOR MONTH OF:                     October 2007
    NUMBER OF DAYS IN MONTH:                31

    CPI-U (NSA) June 2007                   208.352
    CPI-U (NSA) July 2007                   208.299
    CPI-U (NSA) August 2007                 207.917

    Month   Calendar Day    Year    Ref CPI       Index Ratio

    October         1       2007    208.29900       1.09952
    October         2       2007    208.28668       1.09946
    October         3       2007    208.27435       1.09939
    October         4       2007    208.26203       1.09933
    October         5       2007    208.24971       1.09926
    October         6       2007    208.23739       1.09920
    October         7       2007    208.22506       1.09913
    October         8       2007    208.21274       1.09907
    October         9       2007    208.20042       1.09900
    October         10      2007    208.18810       1.09894
    October         11      2007    208.17577       1.09887
    October         12      2007    208.16345       1.09881
    October         13      2007    208.15113       1.09874
    October         14      2007    208.13881       1.09868
    October         15      2007    208.12648       1.09861
    October         16      2007    208.11416       1.09855
    October         17      2007    208.10184       1.09848
    October         18      2007    208.08952       1.09842
    October         19      2007    208.07719       1.09835
    October         20      2007    208.06487       1.09829
    October         21      2007    208.05255       1.09822
    October         22      2007    208.04023       1.09816
    October         23      2007    208.02790       1.09809
    October         24      2007    208.01558       1.09803
    October         25      2007    208.00326       1.09796
    October         26      2007    207.99094       1.09790
    October         27      2007    207.97861       1.09783
    October         28      2007    207.96629       1.09777
    October         29      2007    207.95397       1.09770
    October         30      2007    207.94165       1.09764
    October         31      2007    207.92932       1.09757