<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEETS, CONSOLIDATED STATEMENTS OF INCOME AND CONSOLIDATED
STATEMENTS OF CASH FLOWS INCLUDED IN THE COMPANY'S FORM 10-K FOR THE YEAR ENDED
DECEMBER 31, 1997, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS AND THE NOTES THERETO.  ALSO, THE EPS-PRIMARY REPRESENTS 
THE EPS-BASIC CALCULATED PURSUANT TO FAS 128.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               DEC-31-1997
<CASH>                                         244,469
<SECURITIES>                                 1,042,041
<RECEIVABLES>                                  203,780
<ALLOWANCES>                                    14,535
<INVENTORY>                                    116,026
<CURRENT-ASSETS>                             1,193,918
<PP&E>                                       1,059,395
<DEPRECIATION>                                 376,091
<TOTAL-ASSETS>                               2,507,612
<CURRENT-LIABILITIES>                          289,557
<BONDS>                                        150,000
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         2,484
<OTHER-SE>                                   2,028,741
<TOTAL-LIABILITY-AND-EQUITY>                 2,507,612
<SALES>                                        584,889
<TOTAL-REVENUES>                             1,016,748
<CGS>                                          102,536
<TOTAL-COSTS>                                  102,536
<OTHER-EXPENSES>                               470,923
<LOSS-PROVISION>                                13,976   
<INTEREST-EXPENSE>                               3,642 
<INCOME-PRETAX>                                169,795
<INCOME-TAX>                                    40,751
<INCOME-CONTINUING>                            129,044
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   129,044
<EPS-PRIMARY>                                     1.05
<EPS-DILUTED>                                     1.02