<TABLE> <S> <C>

<PAGE>
<ARTICLE> 9
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION INFORMATION EXTRACTED FROM
AUDIT FINANCIAL STATEMENTS CONTAINED IN THE COMPANY'S ANNUAL REPORT IN FORM 10-K
FOR THE YEARS ENDED DECEMBER 31, 1998 AND DECEMBER 31, 1997 AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED>
<MULTIPLIER> 1,000

<S>                             <C>                     <C>
<PERIOD-TYPE>                   YEAR                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1997
<PERIOD-START>                             JAN-01-1998             JAN-01-1997
<PERIOD-END>                               DEC-31-1998             DEC-31-1997
<CASH>                                         262,667                 265,238
<INT-BEARING-DEPOSITS>                          11,463                  16,630
<FED-FUNDS-SOLD>                                11,990                  85,186
<TRADING-ASSETS>                                     0                       0
<INVESTMENTS-HELD-FOR-SALE>                  2,004,584               1,561,515
<INVESTMENTS-CARRYING>                          92,859                 238,046
<INVESTMENTS-MARKET>                            93,538                 240,110
<LOANS>                                      3,537,537               3,160,501
<ALLOWANCE>                                     51,860                  41,387
<TOTAL-ASSETS>                               6,239,772               5,660,218
<DEPOSITS>                                   5,101,065               4,341,065
<SHORT-TERM>                                   292,669                 275,239
<LIABILITIES-OTHER>                            207,858                 394,263
<LONG-TERM>                                     93,524                 124,612
<PREFERRED-MANDATORY>                          120,000                 120,000
<PREFERRED>                                          0                       0
<COMMON>                                           506                     501
<OTHER-SE>                                     424,150                 404,538
<TOTAL-LIABILITIES-AND-EQUITY>               6,239,772               5,660,218
<INTEREST-LOAN>                                337,771                 271,912
<INTEREST-INVEST>                              124,306                  66,316
<INTEREST-OTHER>                                 5,193                   4,561
<INTEREST-TOTAL>                               467,270                 342,789
<INTEREST-DEPOSIT>                             166,873                 124,964
<INTEREST-EXPENSE>                             194,787                 140,488
<INTEREST-INCOME-NET>                          272,483                 202,301
<LOAN-LOSSES>                                   23,136                   6,604
<SECURITIES-GAINS>                               1,801                     466
<EXPENSE-OTHER>                                240,648                 159,633
<INCOME-PRETAX>                                 71,966                  86,011
<INCOME-PRE-EXTRAORDINARY>                      49,371                  60,163
<EXTRAORDINARY>                                (3,908)                     702
<CHANGES>                                            0                       0
<NET-INCOME>                                    45,463                  60,865
<EPS-BASIC>                                        .90                    1.31
<EPS-DILUTED>                                      .89                    1.27
<YIELD-ACTUAL>                                       0                       0
<LOANS-NON>                                     22,609                  15,151
<LOANS-PAST>                                     3,525                   4,292
<LOANS-TROUBLED>                                   162                     140
<LOANS-PROBLEM>                                      0                       0
<ALLOWANCE-OPEN>                                41,387                  31,354
<CHARGE-OFFS>                                   18,334                   9,352
<RECOVERIES>                                     3,721                   2,716
<ALLOWANCE-CLOSE>                               51,860                  41,387
<ALLOWANCE-DOMESTIC>                            29,221                  20,918
<ALLOWANCE-FOREIGN>                                  0                       0
<ALLOWANCE-UNALLOCATED>                         22,639                  20,469


</TABLE>