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2-1/8% 30-YEAR TREASURY INFLATION-PROTECTED SECURITIES (TIPS) Due February 15, 2041

Ref CPI and Index Ratios for December 2011

    Contact: Office of Financing            202-504-3550
    DESCRIPTION:                            TIPS of February 2041
    CUSIP NUMBER:                           912810QP6
    DATED DATE:                             February 15, 2011
    ORIGINAL ISSUE DATE:                    February 28, 2011
    ADDITIONAL ISSUE DATE:                  June 30, 2011
                                            October 31, 2011
    MATURITY DATE:                          February 15, 2041
    Ref CPI on DATED DATE:                  218.99100
    TABLE FOR MONTH OF:                     December 2011
    NUMBER OF DAYS IN MONTH:                31

    CPI-U (NSA) August 2011                 226.545
    CPI-U (NSA) September 2011              226.889
    CPI-U (NSA) October 2011                226.421

    Month   Calendar Day   Year    Ref CPI      Index Ratio

    December       1       2011    226.88900       1.03607
    December       2       2011    226.87390       1.03600
    December       3       2011    226.85881       1.03593
    December       4       2011    226.84371       1.03586
    December       5       2011    226.82861       1.03579
    December       6       2011    226.81352       1.03572
    December       7       2011    226.79842       1.03565
    December       8       2011    226.78332       1.03558
    December       9       2011    226.76823       1.03551
    December       10      2011    226.75313       1.03544
    December       11      2011    226.73803       1.03538
    December       12      2011    226.72294       1.03531
    December       13      2011    226.70784       1.03524
    December       14      2011    226.69274       1.03517
    December       15      2011    226.67765       1.03510
    December       16      2011    226.66255       1.03503
    December       17      2011    226.64745       1.03496
    December       18      2011    226.63235       1.03489
    December       19      2011    226.61726       1.03482
    December       20      2011    226.60216       1.03476
    December       21      2011    226.58706       1.03469
    December       22      2011    226.57197       1.03462
    December       23      2011    226.55687       1.03455
    December       24      2011    226.54177       1.03448
    December       25      2011    226.52668       1.03441
    December       26      2011    226.51158       1.03434
    December       27      2011    226.49648       1.03427
    December       28      2011    226.48139       1.03420
    December       29      2011    226.46629       1.03414
    December       30      2011    226.45119       1.03407
    December       31      2011    226.43610       1.03400