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4-1/4% 10-YEAR TREASURY INFLATION-PROTECTED SECURITIES (TIPS) Due January 15, 2010

Ref CPI and Index Ratios for February 2008

     Contact: Office of Financing            202-504-3550
     DESCRIPTION:                            Series A-2010
     CUSIP NUMBER:                           9128275W8
     DATED DATE:                             January 15, 2000
     ORIGINAL ISSUE DATE:                    January 18, 2000
     ADDITIONAL ISSUE DATE:                  July 17, 2000
     MATURITY DATE:                          January 15, 2010
     Ref CPI on DATED DATE:                  168.24516
     TABLE FOR MONTH OF:                     February 2008
     NUMBER OF DAYS IN MONTH:                29

     CPI-U (NSA) October 2007                208.936
     CPI-U (NSA) November 2007               210.177
     CPI-U (NSA) December 2007               210.036

     Month    Calendar Day    Year    Ref CPI       Index Ratio

     February        1        2008    210.17700       1.24923
     February        2        2008    210.17214       1.24920
     February        3        2008    210.16728       1.24917
     February        4        2008    210.16241       1.24914
     February        5        2008    210.15755       1.24911
     February        6        2008    210.15269       1.24909
     February        7        2008    210.14783       1.24906
     February        8        2008    210.14297       1.24903
     February        9        2008    210.13810       1.24900
     February        10       2008    210.13324       1.24897
     February        11       2008    210.12838       1.24894
     February        12       2008    210.12352       1.24891
     February        13       2008    210.11866       1.24888
     February        14       2008    210.11379       1.24885
     February        15       2008    210.10893       1.24883
     February        16       2008    210.10407       1.24880
     February        17       2008    210.09921       1.24877
     February        18       2008    210.09434       1.24874
     February        19       2008    210.08948       1.24871
     February        20       2008    210.08462       1.24868
     February        21       2008    210.07976       1.24865
     February        22       2008    210.07490       1.24862
     February        23       2008    210.07003       1.24859
     February        24       2008    210.06517       1.24857
     February        25       2008    210.06031       1.24854
     February        26       2008    210.05545       1.24851
     February        27       2008    210.05059       1.24848
     February        28       2008    210.04572       1.24845
     February        29       2008    210.04086       1.24842