WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
Minnesota Tax Exempt
</LEGEND>
<SERIES>
<NUMBER> 3
<NAME> CLASS M
<S> <C>
<PERIOD-TYPE> ANNUAL
<FISCAL-YEAR-END> MAY-31-2000
<PERIOD-END> MAY-31-2000
<INVESTMENTS-AT-COST> 137,225,581
<INVESTMENTS-AT-VALUE> 131,837,661
<RECEIVABLES> 2,455,742
<ASSETS-OTHER> 753,092
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 135,046,495
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 744,773
<TOTAL-LIABILITIES> 744,773
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 143,535,200
<SHARES-COMMON-STOCK> 262,904
<SHARES-COMMON-PRIOR> 178,406
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (73,651)
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> (3,802,313)
<ACCUM-APPREC-OR-DEPREC> (5,357,514)
<NET-ASSETS> 134,301,722
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 8,625,928
<OTHER-INCOME> 0
<EXPENSES-NET> 1,517,903
<NET-INVESTMENT-INCOME> 7,108,025
<REALIZED-GAINS-CURRENT> (403,157)
<APPREC-INCREASE-CURRENT> (12,234,788)
<NET-CHANGE-FROM-OPS> (5,529,920)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (101,603)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 116,897
<NUMBER-OF-SHARES-REDEEMED> (42,799)
<SHARES-REINVESTED> 10,400
<NET-CHANGE-IN-ASSETS> (21,540,464)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> (73,942)
<OVERDIST-NET-GAINS-PRIOR> (3,409,980)
<GROSS-ADVISORY-FEES> 734,213
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1,605,605
<AVERAGE-NET-ASSETS> 2,095,174
PER-SHARE-NAV-BEGIN> 9.04
<PER-SHARE-NII> .42
<PER-SHARE-GAIN-APPREC> (.73)
<PER-SHARE-DIVIDEND> (.42)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 8.31
<EXPENSE-RATIO> 1.19
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
