<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
Company's March 31, 1998, Consolidated Financial Statements included in its Form
10-K.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          MAR-31-1998
<PERIOD-START>                             APR-01-1997
<PERIOD-END>                               MAR-31-1998
<CASH>                                          72,093
<SECURITIES>                                   643,980
<RECEIVABLES>                                  194,602
<ALLOWANCES>                                     5,606
<INVENTORY>                                          0
<CURRENT-ASSETS>                               373,878
<PP&E>                                         238,772
<DEPRECIATION>                                  75,776
<TOTAL-ASSETS>                               1,248,495
<CURRENT-LIABILITIES>                          335,534
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         2,101
<OTHER-SE>                                     757,056
<TOTAL-LIABILITY-AND-EQUITY>                 1,248,495
<SALES>                                        513,947
<TOTAL-REVENUES>                               730,634
<CGS>                                           77,095
<TOTAL-COSTS>                                  504,477
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                256,559
<INCOME-TAX>                                    90,705
<INCOME-CONTINUING>                            165,854
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   165,854
<EPS-PRIMARY>                                     0.82<F1>
<EPS-DILUTED>                                     0.77
<FN>
<F1>The extracted information above identified as "EPS-PRIMARY" and "EPS-DILUTED"
represents basic earnings per share (EPS) and diluted EPS, respectively,
calculated in accordance with Statement of Financial Accounting Standards No.
128, "Earnings Per Share."
</FN>