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3-1/2% 10-YEAR TREASURY INFLATION-PROTECTED SECURITIES (TIPS) Due January 15, 2011

Ref CPI and Index Ratios for January 2008

    Contact: Office of Financing            202-504-3550
    DESCRIPTION:                            Series A-2011
    CUSIP NUMBER:                           9128276R8
    DATED DATE:                             January 15, 2001
    ORIGINAL ISSUE DATE:                    January 16, 2001
    ADDITIONAL ISSUE DATE:                  July 16, 2001
    MATURITY DATE:                          January 15, 2011
    Ref CPI on DATED DATE:                  174.04516
    TABLE FOR MONTH OF:                     January 2008
    NUMBER OF DAYS IN MONTH:                31

    CPI-U (NSA) September 2007              208.490
    CPI-U (NSA) October 2007                208.936
    CPI-U (NSA) November 2007               210.177

    Month   Calendar Day    Year    Ref CPI       Index Ratio

    January         1       2008    208.93600       1.20047
    January         2       2008    208.97603       1.20070
    January         3       2008    209.01606       1.20093
    January         4       2008    209.05610       1.20116
    January         5       2008    209.09613       1.20139
    January         6       2008    209.13616       1.20162
    January         7       2008    209.17619       1.20185
    January         8       2008    209.21623       1.20208
    January         9       2008    209.25626       1.20231
    January         10      2008    209.29629       1.20254
    January         11      2008    209.33632       1.20277
    January         12      2008    209.37635       1.20300
    January         13      2008    209.41639       1.20323
    January         14      2008    209.45642       1.20346
    January         15      2008    209.49645       1.20369
    January         16      2008    209.53648       1.20392
    January         17      2008    209.57652       1.20415
    January         18      2008    209.61655       1.20438
    January         19      2008    209.65658       1.20461
    January         20      2008    209.69661       1.20484
    January         21      2008    209.73665       1.20507
    January         22      2008    209.77668       1.20530
    January         23      2008    209.81671       1.20553
    January         24      2008    209.85674       1.20576
    January         25      2008    209.89677       1.20599
    January         26      2008    209.93681       1.20622
    January         27      2008    209.97684       1.20645
    January         28      2008    210.01687       1.20668
    January         29      2008    210.05690       1.20691
    January         30      2008    210.09694       1.20714
    January         31      2008    210.13697       1.20737