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

Ref CPI and Index Ratios for December 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:                     December 2007
   NUMBER OF DAYS IN MONTH:                31

   CPI-U (NSA) August 2007                 207.917
   CPI-U (NSA) September 2007              208.490
   CPI-U (NSA) October 2007                208.936

   Month      Calendar Day    Year    Ref CPI       Index Ratio

   December        1          2007    208.49000       1.27128
   December        2          2007    208.50439       1.27137
   December        3          2007    208.51877       1.27146
   December        4          2007    208.53316       1.27154
   December        5          2007    208.54755       1.27163
   December        6          2007    208.56194       1.27172
   December        7          2007    208.57632       1.27181
   December        8          2007    208.59071       1.27189
   December        9          2007    208.60510       1.27198
   December        10         2007    208.61948       1.27207
   December        11         2007    208.63387       1.27216
   December        12         2007    208.64826       1.27225
   December        13         2007    208.66265       1.27233
   December        14         2007    208.67703       1.27242
   December        15         2007    208.69142       1.27251
   December        16         2007    208.70581       1.27260
   December        17         2007    208.72019       1.27268
   December        18         2007    208.73458       1.27277
   December        19         2007    208.74897       1.27286
   December        20         2007    208.76335       1.27295
   December        21         2007    208.77774       1.27304
   December        22         2007    208.79213       1.27312
   December        23         2007    208.80652       1.27321
   December        24         2007    208.82090       1.27330
   December        25         2007    208.83529       1.27339
   December        26         2007    208.84968       1.27347
   December        27         2007    208.86406       1.27356
   December        28         2007    208.87845       1.27365
   December        29         2007    208.89284       1.27374
   December        30         2007    208.90723       1.27382
   December        31         2007    208.92161       1.27391