<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
STATEMENT OF ASSETS AND LIABILITIES AT SEPTEMBER 30, 1998 AND THE STATEMENT OF
OPERATIONS FROM JANUARY 1, 1998 TO SEPTEMBER 30, 1998.
</LEGEND>
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1998
<PERIOD-START>                             JUL-01-1998             JAN-01-1998
<PERIOD-END>                               SEP-30-1998             SEP-30-1998
<INVESTMENTS-AT-COST>                        1,734,167               1,734,167
<INVESTMENTS-AT-VALUE>                       1,735,458               1,735,458
<RECEIVABLES>                                        0                       0
<ASSETS-OTHER>                                  15,759                  15,759
<OTHER-ITEMS-ASSETS>                           311,443                 311,443
<TOTAL-ASSETS>                               2,061,369               2,061,369
<PAYABLE-FOR-SECURITIES>                             0                       0
<SENIOR-LONG-TERM-DEBT>                              0                       0
<OTHER-ITEMS-LIABILITIES>                       23,366                  23,366
<TOTAL-LIABILITIES>                             23,366                  23,366
<SENIOR-EQUITY>                                      0                       0
<PAID-IN-CAPITAL-COMMON>                     2,083,290               2,083,290
<SHARES-COMMON-STOCK>                        2,210,434               2,210,434
<SHARES-COMMON-PRIOR>                        2,210,434               2,210,434
<ACCUMULATED-NII-CURRENT>                       18,853                  65,458
<OVERDISTRIBUTION-NII>                               0                       0
<ACCUMULATED-NET-GAINS>                              0                       0
<OVERDISTRIBUTION-GAINS>                             0                       0
<ACCUM-APPREC-OR-DEPREC>                         1,291                   1,291
<NET-ASSETS>                                 2,038,003               2,038,003
<DIVIDEND-INCOME>                                    0                       0
<INTEREST-INCOME>                               18,853                  65,458
<OTHER-INCOME>                                   6,250                   6,250
<EXPENSES-NET>                                  17,730                  65,494
<NET-INVESTMENT-INCOME>                          7,074                   1,634
<REALIZED-GAINS-CURRENT>                             0                       0
<APPREC-INCREASE-CURRENT>                        2,108                   1,291
<NET-CHANGE-FROM-OPS>                            7,074                   1,634
<EQUALIZATION>                                       0                       0
<DISTRIBUTIONS-OF-INCOME>                            0                       0
<DISTRIBUTIONS-OF-GAINS>                             0                       0
<DISTRIBUTIONS-OTHER>                                0                       0
<NUMBER-OF-SHARES-SOLD>                              0                       0
<NUMBER-OF-SHARES-REDEEMED>                          0                       0
<SHARES-REINVESTED>                                  0                       0
<NET-CHANGE-IN-ASSETS>                           7,074                   1,634
<ACCUMULATED-NII-PRIOR>                              0                       0
<ACCUMULATED-GAINS-PRIOR>                            0                       0
<OVERDISTRIB-NII-PRIOR>                              0                       0
<OVERDIST-NET-GAINS-PRIOR>                           0                       0
<GROSS-ADVISORY-FEES>                           10,000                  27,500
<INTEREST-EXPENSE>                                  49                      99
<GROSS-EXPENSE>                                 17,730                  65,494
<AVERAGE-NET-ASSETS>                         2,034,466               2,037,186
<PER-SHARE-NAV-BEGIN>                              .92                     .92
<PER-SHARE-NII>                                      0                       0
<PER-SHARE-GAIN-APPREC>                              0                       0
<PER-SHARE-DIVIDEND>                                 0                       0
<PER-SHARE-DISTRIBUTIONS>                            0                       0
<RETURNS-OF-CAPITAL>                                 0                       0
<PER-SHARE-NAV-END>                                .92                     .92
<EXPENSE-RATIO>                                    .01                     .03
<AVG-DEBT-OUTSTANDING>                               0                       0
<AVG-DEBT-PER-SHARE>                                 0                       0
        

</TABLE>