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3% 10-YEAR TREASURY INFLATION-PROTECTED SECURITIES (TIPS) Due July 15, 2012

Ref CPI and Index Ratios for October 2007

     Contact: Office of Financing            202-504-3550
     DESCRIPTION:                            Series C-2012
     CUSIP NUMBER:                           912828AF7
     DATED DATE:                             July 15, 2002
     ORIGINAL ISSUE DATE:                    July 15, 2002
     ADDITIONAL ISSUE DATE:                  October 15, 2002
                                             January 15, 2003
     MATURITY DATE:                          July 15, 2012
     Ref CPI on DATED DATE:                  179.80000
     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       1.15850
     October         2       2007    208.28668       1.15844
     October         3       2007    208.27435       1.15837
     October         4       2007    208.26203       1.15830
     October         5       2007    208.24971       1.15823
     October         6       2007    208.23739       1.15816
     October         7       2007    208.22506       1.15809
     October         8       2007    208.21274       1.15802
     October         9       2007    208.20042       1.15796
     October         10      2007    208.18810       1.15789
     October         11      2007    208.17577       1.15782
     October         12      2007    208.16345       1.15775
     October         13      2007    208.15113       1.15768
     October         14      2007    208.13881       1.15761
     October         15      2007    208.12648       1.15754
     October         16      2007    208.11416       1.15748
     October         17      2007    208.10184       1.15741
     October         18      2007    208.08952       1.15734
     October         19      2007    208.07719       1.15727
     October         20      2007    208.06487       1.15720
     October         21      2007    208.05255       1.15713
     October         22      2007    208.04023       1.15706
     October         23      2007    208.02790       1.15700
     October         24      2007    208.01558       1.15693
     October         25      2007    208.00326       1.15686
     October         26      2007    207.99094       1.15679
     October         27      2007    207.97861       1.15672
     October         28      2007    207.96629       1.15665
     October         29      2007    207.95397       1.15658
     October         30      2007    207.94165       1.15652
     October         31      2007    207.92932       1.15645