<TABLE> <S> <C>

<PAGE>
<ARTICLE> 9
<RESTATED> 
       
<S>                             <C>                     <C>                     <C>                     <C>
<PERIOD-TYPE>                   YEAR                   3-MOS                   3-MOS                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1996             MAR-31-1996             JUN-30-1996             SEP-30-1996
<PERIOD-START>                             JAN-01-1996             JAN-01-1996             APR-01-1996             JUL-01-1996
<PERIOD-END>                               DEC-31-1996             MAR-31-1996             JUN-30-1996             SEP-30-1996
<CASH>                                      19,094,515              29,141,332              26,744,762               7,936,220
<INT-BEARING-DEPOSITS>                               0                       0                       0                       0
<FED-FUNDS-SOLD>                           120,000,000              50,000,000              75,000,000              94,000,000
<TRADING-ASSETS>                                     0                       0                       0                       0
<INVESTMENTS-HELD-FOR-SALE>                271,120,964             121,177,563             181,094,653             232,492,592
<INVESTMENTS-CARRYING>                     460,009,923             296,016,758             365,511,655             379,448,852
<INVESTMENTS-MARKET>                       460,182,579             294,333,031             361,753,769             376,956,153
<LOANS>                                     66,336,889              36,721,856              86,123,750              43,801,483
<ALLOWANCE>                                    100,000                  56,047                  84,114                  84,114
<TOTAL-ASSETS>                             965,393,760             553,828,149             760,147,129             784,799,938
<DEPOSITS>                                 596,516,909             388,241,300             474,368,094             488,661,498
<SHORT-TERM>                               296,421,201              99,798,353             217,001,552             224,626,676
<LIABILITIES-OTHER>                         10,788,747              10,467,527              11,620,911              11,737,189
<LONG-TERM>                                          0                       0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0                       0
<PREFERRED>                                          0                       0                       0                       0
<COMMON>                                        65,876                  66,380                  66,383                  66,383
<OTHER-SE>                                  61,601,026              55,154,590              57,090,188              59,708,191
<TOTAL-LIABILITIES-AND-EQUITY>             965,393,760             553,828,149             760,147,129             784,799,938
<INTEREST-LOAN>                              2,332,158                 418,031                 579,897                 591,833
<INTEREST-INVEST>                           34,355,269               5,546,682               7,386,431               9,768,547
<INTEREST-OTHER>                                     0                       0                       0                       0
<INTEREST-TOTAL>                            36,677,427               5,964,713               7,966,328              10,360,380
<INTEREST-DEPOSIT>                           9,271,675                 977,919               2,092,538               2,495,044
<INTEREST-EXPENSE>                          18,668,033               2,022,877               3,904,330               5,662,451
<INTEREST-INCOME-NET>                       18,009,394               3,941,836               4,061,998               4,697,929
<LOAN-LOSSES>                                   65,000                  21,047                  28,067                       0
<SECURITIES-GAINS>                             (2,488)                   2,488                   3,825                (14,694)
<EXPENSE-OTHER>                             64,613,424              14,893,377              15,582,685              15,863,550
<INCOME-PRETAX>                             12,517,665               2,397,741               3,186,350               3,466,858
<INCOME-PRE-EXTRAORDINARY>                   7,666,161               1,465,430               1,965,653               2,172,949
<EXTRAORDINARY>                                      0                       0                       0                       0
<CHANGES>                                            0                       0                       0                       0
<NET-INCOME>                                 7,666,161               1,465,430               1,965,653               2,172,949
<EPS-PRIMARY>                                     1.15                    0.23                    0.31                    0.34
<EPS-DILUTED>                                     1.14                    0.23                    0.30                    0.34
<YIELD-ACTUAL>                                    3.13                    4.36                    3.62                    3.34
<LOANS-NON>                                          0                       0                       0                       0
<LOANS-PAST>                                         0                       0                       0                       0
<LOANS-TROUBLED>                                     0                       0                       0                       0
<LOANS-PROBLEM>                                      0                       0                       0                       0
<ALLOWANCE-OPEN>                                35,000                  35,000                  56,047                  84,114
<CHARGE-OFFS>                                   65,000                  21,047                  28,067                       0
<RECOVERIES>                                         0                       0                       0                       0
<ALLOWANCE-CLOSE>                              100,000                  56,047                  84,114                  84,114
<ALLOWANCE-DOMESTIC>                                 0                       0                       0                       0
<ALLOWANCE-FOREIGN>                                  0                       0                       0                       0
<ALLOWANCE-UNALLOCATED>                              0                       0                       0                       0
        

</TABLE>