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<PERIOD-TYPE>                    3-MOS             6-MOS              9-MOS
<FISCAL-YEAR-END>                DEC-31-1997       DEC-31-1997        DEC-31-1997
<PERIOD-START>                   JAN-01-1997       JAN-01-1997        JAN-01-1997
<PERIOD-END>                     MAR-31-1997       JUN-30-1997        SEP-30-1997
<DEBT-HELD-FOR-SALE>                  3,285,285         3,592,042          3,718,365
<DEBT-CARRYING-VALUE>                    78,974                 0                  0
<DEBT-MARKET-VALUE>                      85,508                 0                  0
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<MORTGAGE>                                    0                 0                  0
<REAL-ESTATE>                                 0                 0                  0
<TOTAL-INVEST>                        3,592,589         3,841,589          3,929,651
<CASH>                                   45,283            37,980             62,299
<RECOVER-REINSURE>                      730,089           673,789            672,527
<DEFERRED-ACQUISITION>                   80,316            79,323             82,121
<TOTAL-ASSETS>                        5,088,187         5,248,887          5,369,003
<POLICY-LOSSES>                       3,265,220         3,305,266          3,367,522
<UNEARNED-PREMIUMS>                     359,830           357,352            360,029
<POLICY-OTHER>                                0                 0                  0
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<NOTES-PAYABLE>                               0                 0                  0
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<COMMON>                                    508               508                508
<OTHER-SE>                            1,072,171         1,164,719          1,246,411
<TOTAL-LIABILITY-AND-EQUITY>          5,088,187         5,248,887          5,369,003
<PREMIUMS>                              230,443           477,958            749,478
<INVESTMENT-INCOME>                      54,042           111,410            169,327
<INVESTMENT-GAINS>                         (199)           13,211             15,933
<OTHER-INCOME>                            3,234             4,007              3,577
<BENEFITS>                              166,841           347,032            551,266
<UNDERWRITING-AMORTIZATION>               3,295             4,268              1,143
<UNDERWRITING-OTHER>                     71,459           148,723            228,525
<INCOME-PRETAX>                          45,925           106,563            157,381
<INCOME-TAX>                             11,461            27,761             40,147
<INCOME-CONTINUING>                      34,464            78,802            117,234
<DISCONTINUED>                                0                 0                  0
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<NET-INCOME>                             34,464            78,802            117,234
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