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

Ref CPI and Index Ratios for January 2005

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:                      January 2005
NUMBER OF DAYS IN MONTH:                 31

CPI-U (NSA) September 2004               189.9
CPI-U (NSA) October 2004                 190.9
CPI-U (NSA) November 2004                191.0

Month   Calendar Day    Year    Ref CPI       Index Ratio

January         1       2005    190.90000       1.18164
January         2       2005    190.90323       1.18166
January         3       2005    190.90645       1.18168
January         4       2005    190.90968       1.18170
January         5       2005    190.91290       1.18172
January         6       2005    190.91613       1.18174
January         7       2005    190.91935       1.18176
January         8       2005    190.92258       1.18178
January         9       2005    190.92581       1.18180
January         10      2005    190.92903       1.18182
January         11      2005    190.93226       1.18184
January         12      2005    190.93548       1.18186
January         13      2005    190.93871       1.18188
January         14      2005    190.94194       1.18190
January         15      2005    190.94516       1.18192
January         16      2005    190.94839       1.18194
January         17      2005    190.95161       1.18196
January         18      2005    190.95484       1.18198
January         19      2005    190.95806       1.18200
January         20      2005    190.96129       1.18202
January         21      2005    190.96452       1.18204
January         22      2005    190.96774       1.18206
January         23      2005    190.97097       1.18208
January         24      2005    190.97419       1.18210
January         25      2005    190.97742       1.18212
January         26      2005    190.98065       1.18214
January         27      2005    190.98387       1.18216
January         28      2005    190.98710       1.18218
January         29      2005    190.99032       1.18220
January         30      2005    190.99355       1.18222
January         31      2005    190.99677       1.18224