<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, 1996, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS AND THE NOTES THERETO.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               DEC-31-1996
<CASH>                                         207,264
<SECURITIES>                                   951,816
<RECEIVABLES>                                  205,481
<ALLOWANCES>                                     7,869
<INVENTORY>                                     91,943
<CURRENT-ASSETS>                               955,084
<PP&E>                                         906,267
<DEPRECIATION>                                 320,100
<TOTAL-ASSETS>                               2,226,372
<CURRENT-LIABILITIES>                          249,951
<BONDS>                                        150,000
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         2,428
<OTHER-SE>                                   1,798,631
<TOTAL-LIABILITY-AND-EQUITY>                 2,226,372
<SALES>                                        582,829
<TOTAL-REVENUES>                               968,678
<CGS>                                          104,527
<TOTAL-COSTS>                                  104,527
<OTHER-EXPENSES>                               471,143
<LOSS-PROVISION>                                 9,887   
<INTEREST-EXPENSE>                               5,010 
<INCOME-PRETAX>                                147,935
<INCOME-TAX>                                    29,587
<INCOME-CONTINUING>                            118,348
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   118,348
<EPS-PRIMARY>                                     0.96
<EPS-DILUTED>                                        0