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3-5/8% 10-YEAR TREASURY INFLATION-PROTECTED SECURITIES (TIPS)

Ref CPI and Index Ratios for December 2004

Contact: Office of Financing      202-504-3550
DESCRIPTION:                            Series A-2008
CUSIP NUMBER:                           9128273T7
DATED DATE:                             January 15, 1998
ORIGINAL ISSUE DATE:                    January 15, 1998
ADDITIONAL ISSUE DATE:                  October 15, 1998
MATURITY DATE:                          January 15, 2008
Ref CPI on DATED DATE:                  161.55484
TABLE FOR MONTH OF:                     December 2004
NUMBER OF DAYS IN MONTH:                31

CPI-U (NSA) August 2004                 189.5
CPI-U (NSA) September 2004              189.9
CPI-U (NSA) October 2004                190.9

Month   Calendar Day    Year    Ref CPI       Index Ratio

December        1       2004    189.90000       1.17545
December        2       2004    189.93226       1.17565
December        3       2004    189.96452       1.17585
December        4       2004    189.99677       1.17605
December        5       2004    190.02903       1.17625
December        6       2004    190.06129       1.17645
December        7       2004    190.09355       1.17665
December        8       2004    190.12581       1.17685
December        9       2004    190.15806       1.17705
December        10      2004    190.19032       1.17725
December        11      2004    190.22258       1.17745
December        12      2004    190.25484       1.17765
December        13      2004    190.28710       1.17785
December        14      2004    190.31935       1.17805
December        15      2004    190.35161       1.17825
December        16      2004    190.38387       1.17845
December        17      2004    190.41613       1.17865
December        18      2004    190.44839       1.17885
December        19      2004    190.48065       1.17905
December        20      2004    190.51290       1.17925
December        21      2004    190.54516       1.17945
December        22      2004    190.57742       1.17965
December        23      2004    190.60968       1.17985
December        24      2004    190.64194       1.18004
December        25      2004    190.67419       1.18024
December        26      2004    190.70645       1.18044
December        27      2004    190.73871       1.18064
December        28      2004    190.77097       1.18084
December        29      2004    190.80323       1.18104
December        30      2004    190.83548       1.18124
December        31      2004    190.86774       1.18144