<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>
<SERIES>
   <NUMBER> 062
   <NAME> NUVEEN NEW YORK INSURED MUNI BOND FUND - CLASS B
<MULTIPLIER> 1000

<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          FEB-29-2000
<PERIOD-START>                             MAR-01-1999
<PERIOD-END>                               FEB-29-2000
<INVESTMENTS-AT-COST>                           331724
<INVESTMENTS-AT-VALUE>                          334160
<RECEIVABLES>                                     4114
<ASSETS-OTHER>                                       5
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                  338279
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                         2925
<TOTAL-LIABILITIES>                               2925
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        333124
<SHARES-COMMON-STOCK>                             1596
<SHARES-COMMON-PRIOR>                             1245
<ACCUMULATED-NII-CURRENT>                          313
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                          (518)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                          2435
<NET-ASSETS>                                    335354
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                21132
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                    2797
<NET-INVESTMENT-INCOME>                          18335
<REALIZED-GAINS-CURRENT>                         (516)
<APPREC-INCREASE-CURRENT>                      (26998)
<NET-CHANGE-FROM-OPS>                           (9179)
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                          683
<DISTRIBUTIONS-OF-GAINS>                             7
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                            715
<NUMBER-OF-SHARES-REDEEMED>                        401
<SHARES-REINVESTED>                                 37
<NET-CHANGE-IN-ASSETS>                         (36376)
<ACCUMULATED-NII-PRIOR>                             63
<ACCUMULATED-GAINS-PRIOR>                          135
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                             1922
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                   2805
<AVERAGE-NET-ASSETS>                             16275
<PER-SHARE-NAV-BEGIN>                            10.74
<PER-SHARE-NII>                                    .44
<PER-SHARE-GAIN-APPREC>                          (.79)
<PER-SHARE-DIVIDEND>                             (.43)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               9.96
<EXPENSE-RATIO>                                   1.65


</TABLE>