<TABLE> <S> <C>

<PAGE>
<ARTICLE> 9
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM UNAUDITED
FINANCIAL STATEMENTS CONTAINED IN THE COMPANY'S QUARTERLY REPORTS IN FORM 10-Q
FOR QUARTERS ENDED MARCH 31, 1999, JUNE 30, 1999 AND SEPTEMBER 30, 1999 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED>
<MULTIPLIER> 1,000

<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   6-MOS                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999             DEC-31-1999             DEC-31-1999
<PERIOD-START>                             JAN-01-1999             JAN-01-1999             JAN-01-1999
<PERIOD-END>                               MAR-31-1999             JUN-30-1999             SEP-30-1999
<CASH>                                         211,680                 240,686                 214,630
<INT-BEARING-DEPOSITS>                          16,856                  17,253                   6,891
<FED-FUNDS-SOLD>                                 9,435                  11,975                  10,695
<TRADING-ASSETS>                                     0                       0                       0
<INVESTMENTS-HELD-FOR-SALE>                  2,025,267               2,018,228               1,954,382
<INVESTMENTS-CARRYING>                          93,692                  94,510                  95,264
<INVESTMENTS-MARKET>                            94,118                  94,374                  95,071
<LOANS>                                      3,483,616               3,557,830               3,655,580
<ALLOWANCE>                                     53,254                  48,862                  50,366
<TOTAL-ASSETS>                               6,157,645               6,269,159               6,264,927
<DEPOSITS>                                   4,991,639               4,915,868               4,980,729
<SHORT-TERM>                                   293,990                 435,257                 438,733
<LIABILITIES-OTHER>                            231,847                 301,077                 215,481
<LONG-TERM>                                     94,487                  94,037                  93,434
<PREFERRED-MANDATORY>                          120,000                 120,000                 120,000
<PREFERRED>                                          0                       0                       0
<COMMON>                                           506                     507                     510
<OTHER-SE>                                     425,176                 402,413                 416,043
<TOTAL-LIABILITIES-AND-EQUITY>               6,157,645               6,269,159               6,264,927
<INTEREST-LOAN>                                 82,012                 164,356                 248,354
<INTEREST-INVEST>                               32,381                  65,851                  98,654
<INTEREST-OTHER>                                   336                     568                     842
<INTEREST-TOTAL>                               114,729                 230,775                 347,850
<INTEREST-DEPOSIT>                              38,317                  75,784                 113,237
<INTEREST-EXPENSE>                              45,556                  91,479                 138,412
<INTEREST-INCOME-NET>                           69,173                 139,296                 209,438
<LOAN-LOSSES>                                    4,881                  11,229                  15,512
<SECURITIES-GAINS>                                 530                   1,784                   2,013
<EXPENSE-OTHER>                                 52,987                 107,008                 160,799
<INCOME-PRETAX>                                 27,785                  56,440                  86,800
<INCOME-PRE-EXTRAORDINARY>                      18,255                  37,458                  57,385
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                    18,255                  37,458                  57,385
<EPS-BASIC>                                        .36                     .75                    1.15
<EPS-DILUTED>                                      .36                     .74                    1.13
<YIELD-ACTUAL>                                       0                       0                       0
<LOANS-NON>                                     27,278                  28,126                  26,319
<LOANS-PAST>                                     1,578                   1,431                   2,372
<LOANS-TROUBLED>                                   143                     126                     391
<LOANS-PROBLEM>                                      0                       0                       0
<ALLOWANCE-OPEN>                                51,860                  53,254                  48,862
<CHARGE-OFFS>                                    5,185                  11,943                   3,588
<RECOVERIES>                                     1,698                   1,203                     809
<ALLOWANCE-CLOSE>                               53,254                  48,862                  50,366
<ALLOWANCE-DOMESTIC>                                 0                       0                       0
<ALLOWANCE-FOREIGN>                                  0                       0                       0
<ALLOWANCE-UNALLOCATED>                              0                       0                       0


</TABLE>