<ARTICLE> 6
<LEGEND>
This schedule contains Summary Financial Information extracted from the Form
N-SAR and the financial statements and is qualified in its entirety by
references to such documents.

<MULTIPLIER> 1000

                             
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          MAY-31-2000
<PERIOD-START>                             JUN-01-1999
<PERIOD-END>                               MAY-31-2000
<INVESTMENTS-AT-COST>                            97012
<INVESTMENTS-AT-VALUE>                           96389
<RECEIVABLES>                                     1850
<ASSETS-OTHER>                                      15
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                   98254
<PAYABLE-FOR-SECURITIES>                          1053
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                         1878
<TOTAL-LIABILITIES>                               2931
<SENIOR-EQUITY>                                  34000
<PAID-IN-CAPITAL-COMMON>                         64515
<SHARES-COMMON-STOCK>                             4655
<SHARES-COMMON-PRIOR>                             4640
<ACCUMULATED-NII-CURRENT>                           78
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         (2647)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                         (623)
<NET-ASSETS>                                     95323
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                 5718
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                     828
<NET-INVESTMENT-INCOME>                           4890
<REALIZED-GAINS-CURRENT>                         (952)
<APPREC-INCREASE-CURRENT>                       (6202)
<NET-CHANGE-FROM-OPS>                           (2264)
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                         3932
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              0
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                 15
<NET-CHANGE-IN-ASSETS>                          (6965)
<ACCUMULATED-NII-PRIOR>                            114
<ACCUMULATED-GAINS-PRIOR>                       (1694)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              632
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    838
<AVERAGE-NET-ASSETS>                             97279
<PER-SHARE-NAV-BEGIN>                                0
<PER-SHARE-NII>                                      0
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                                  0
<EXPENSE-RATIO>                                      0