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3-7/8% 10-YEAR TREASURY INFLATION-PROTECTED SECURITIES (TIPS) Due January 15, 2009

Ref CPI and Index Ratios for October 2007

   Contact: Office of Financing            202-504-3550
   DESCRIPTION:                            Series A-2009
   CUSIP NUMBER:                           9128274Y5
   DATED DATE:                             January 15, 1999
   ORIGINAL ISSUE DATE:                    January 15, 1999
   ADDITIONAL ISSUE DATE:                  July 15, 1999
   MATURITY DATE:                          January 15, 2009
   Ref CPI on DATED DATE:                  164.00000
   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       1.27012
   October         2       2007    208.28668       1.27004
   October         3       2007    208.27435       1.26997
   October         4       2007    208.26203       1.26989
   October         5       2007    208.24971       1.26982
   October         6       2007    208.23739       1.26974
   October         7       2007    208.22506       1.26967
   October         8       2007    208.21274       1.26959
   October         9       2007    208.20042       1.26951
   October         10      2007    208.18810       1.26944
   October         11      2007    208.17577       1.26936
   October         12      2007    208.16345       1.26929
   October         13      2007    208.15113       1.26921
   October         14      2007    208.13881       1.26914
   October         15      2007    208.12648       1.26906
   October         16      2007    208.11416       1.26899
   October         17      2007    208.10184       1.26891
   October         18      2007    208.08952       1.26884
   October         19      2007    208.07719       1.26876
   October         20      2007    208.06487       1.26869
   October         21      2007    208.05255       1.26861
   October         22      2007    208.04023       1.26854
   October         23      2007    208.02790       1.26846
   October         24      2007    208.01558       1.26839
   October         25      2007    208.00326       1.26831
   October         26      2007    207.99094       1.26824
   October         27      2007    207.97861       1.26816
   October         28      2007    207.96629       1.26809
   October         29      2007    207.95397       1.26801
   October         30      2007    207.94165       1.26794
   October         31      2007    207.92932       1.26786