<TABLE> <S> <C>
<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.
</LEGEND>
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> MAR-31-2000
<PERIOD-START> APR-01-1999
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 224295
<INVESTMENTS-AT-VALUE> 240186
<RECEIVABLES> 5219
<ASSETS-OTHER> 32
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 245437
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1595
<TOTAL-LIABILITIES> 1595
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 227789
<SHARES-COMMON-STOCK> 16378
<SHARES-COMMON-PRIOR> 16378
<ACCUMULATED-NII-CURRENT> 293
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (133)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 15891
<NET-ASSETS> 243840
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 7838
<OTHER-INCOME> 0
<EXPENSES-NET> 407
<NET-INVESTMENT-INCOME> 7431
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> (34)
<NET-CHANGE-FROM-OPS> 7397
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 7370
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 27
<ACCUMULATED-NII-PRIOR> 233
<ACCUMULATED-GAINS-PRIOR> (133)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 298
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 413
<AVERAGE-NET-ASSETS> 243379
<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
</TABLE>
