<TABLE> <S> <C>

<ARTICLE> 6
<LEGEND>
This schedule contains Summary Financial Information extracted from the Form
N-SAR and the funancial 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>                   6-MOS
<FISCAL-YEAR-END>                          FEB-28-2001
<PERIOD-START>                             MAR-01-2000
<PERIOD-END>                               AUG-31-2000
<INVESTMENTS-AT-COST>                           317210
<INVESTMENTS-AT-VALUE>                          331741
<RECEIVABLES>                                     4004
<ASSETS-OTHER>                                    1022
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                  336767
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                         1918
<TOTAL-LIABILITIES>                               1918
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        321715
<SHARES-COMMON-STOCK>                             1486
<SHARES-COMMON-PRIOR>                             1596
<ACCUMULATED-NII-CURRENT>                          306
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         (1702)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                         14530
<NET-ASSETS>                                    334849
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                 9941
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                    1349
<NET-INVESTMENT-INCOME>                           8592
<REALIZED-GAINS-CURRENT>                        (1184)
<APPREC-INCREASE-CURRENT>                        12095
<NET-CHANGE-FROM-OPS>                            19503
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                          331
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                            101
<NUMBER-OF-SHARES-REDEEMED>                        229
<SHARES-REINVESTED>                                 18
<NET-CHANGE-IN-ASSETS>                           (505)
<ACCUMULATED-NII-PRIOR>                            313
<ACCUMULATED-GAINS-PRIOR>                        (518)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              902
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                   1354
<AVERAGE-NET-ASSETS>                             15385
<PER-SHARE-NAV-BEGIN>                             9.96
<PER-SHARE-NII>                                    .22
<PER-SHARE-GAIN-APPREC>                            .33
<PER-SHARE-DIVIDEND>                             (.22)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.29
<EXPENSE-RATIO>                                   1.67


</TABLE>