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3-7/8% 30-YEAR TREASURY INFLATION-PROTECTED SECURITIES (TIPS)

Ref CPI and Index Ratios for June 2006

Contact: Office of Financing       202-504-3550
DESCRIPTION:                            TIPS of April 2029
CUSIP NUMBER:                           912810FH6
DATED DATE:                             April 15, 1999
ORIGINAL ISSUE DATE:                    April 15, 1999
ADDITIONAL ISSUE DATE:                  October 15, 1999
                                        October 16, 2000
MATURITY DATE:                          April 15, 2029
Ref CPI on DATED DATE:                  164.39333
TABLE FOR MONTH OF:                     June 2006
NUMBER OF DAYS IN MONTH:                30

CPI-U (NSA) February 2006               198.7
CPI-U (NSA) March 2006                  199.8
CPI-U (NSA) April 2006                  201.5

Month   Calendar Day    Year    Ref CPI      Index Ratio

June           1       2006    199.80000       1.21538
June           2       2006    199.85667       1.21572
June           3       2006    199.91333       1.21607
June           4       2006    199.97000       1.21641
June           5       2006    200.02667       1.21676
June           6       2006    200.08333       1.21710
June           7       2006    200.14000       1.21745
June           8       2006    200.19667       1.21779
June           9       2006    200.25333       1.21814
June           10      2006    200.31000       1.21848
June           11      2006    200.36667       1.21882
June           12      2006    200.42333       1.21917
June           13      2006    200.48000       1.21951
June           14      2006    200.53667       1.21986
June           15      2006    200.59333       1.22020
June           16      2006    200.65000       1.22055
June           17      2006    200.70667       1.22089
June           18      2006    200.76333       1.22124
June           19      2006    200.82000       1.22158
June           20      2006    200.87667       1.22193
June           21      2006    200.93333       1.22227
June           22      2006    200.99000       1.22262
June           23      2006    201.04667       1.22296
June           24      2006    201.10333       1.22331
June           25      2006    201.16000       1.22365
June           26      2006    201.21667       1.22400
June           27      2006    201.27333       1.22434
June           28      2006    201.33000       1.22468
June           29      2006    201.38667       1.22503
June           30      2006    201.44333       1.22537