<ARTICLE> 7
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEETS AND STATEMENTS OF INCOME AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               JUN-30-1998
<DEBT-HELD-FOR-SALE>                         3,943,900
<DEBT-CARRYING-VALUE>                                0
<DEBT-MARKET-VALUE>                                  0
<EQUITIES>                                   1,229,300
<MORTGAGE>                                           0
<REAL-ESTATE>                                        0
<TOTAL-INVEST>                               5,675,400
<CASH>                                          21,200
<RECOVER-REINSURE>                             300,200
<DEFERRED-ACQUISITION>                         296,400
<TOTAL-ASSETS>                               8,285,700
<POLICY-LOSSES>                              2,170,400
<UNEARNED-PREMIUMS>                          2,301,800
<POLICY-OTHER>                                       0
<POLICY-HOLDER-FUNDS>                                0
<NOTES-PAYABLE>                                776,200
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        72,500
<OTHER-SE>                                   2,338,500
<TOTAL-LIABILITY-AND-EQUITY>                 8,285,700
<PREMIUMS>                                   2,373,400
<INVESTMENT-INCOME>                            144,100
<INVESTMENT-GAINS>                              48,100
<OTHER-INCOME>                                  20,000
<BENEFITS>                                   1,633,800
<UNDERWRITING-AMORTIZATION>                    317,600
<UNDERWRITING-OTHER>                           233,500
<INCOME-PRETAX>                                354,400
<INCOME-TAX>                                   111,300
<INCOME-CONTINUING>                            243,100
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   243,100
<EPS-PRIMARY>                                     3.36
<EPS-DILUTED>                                     3.20
<RESERVE-OPEN>                                       0
<PROVISION-CURRENT>                                  0
<PROVISION-PRIOR>                                    0
<PAYMENTS-CURRENT>                                   0
<PAYMENTS-PRIOR>                                     0
<RESERVE-CLOSE>                                      0
<CUMULATIVE-DEFICIENCY>                              0