<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
RESTATED FINANCIAL DATA SCHEDULE (AS A RESULT OF CHANGE IN ACCOUNTING PRINCIPLE
-- SFAS 128)
</LEGEND>
<RESTATED> 
<MULTIPLIER> 1000
       
<S>                              <C>            <C>             <C>
<PERIOD-TYPE>                    3-MOS          6-MOS           9-MOS
<FISCAL-YEAR-END>                MAR-31-1997    MAR-31-1997     MAR-31-1997
<PERIOD-END>                     JUN-30-1996    SEP-30-1996     DEC-31-1996
<CASH>                                 12117           6337            6295
<SECURITIES>                               0              0               0
<RECEIVABLES>                          43355          54782           55461
<ALLOWANCES>                               0              0               0
<INVENTORY>                                0              0               0
<CURRENT-ASSETS>                       77129          96462           93851
<PP&E>                                134325         158228          196425
<DEPRECIATION>                             0              0               0
<TOTAL-ASSETS>                        221558         274887          326335
<CURRENT-LIABILITIES>                  37997          46222           52680
<BONDS>                                25038          54962           90127
<PREFERRED-MANDATORY>                      0              0               0
<PREFERRED>                                0              0               0
<COMMON>                                 190            381             382
<OTHER-SE>                            142435         155424          163748
<TOTAL-LIABILITY-AND-EQUITY>          221558         274887          326335
<SALES>                                    0              0               0
<TOTAL-REVENUES>                       50332         122763          179539
<CGS>                                      0              0               0
<TOTAL-COSTS>                          37979          88626          130122
<OTHER-EXPENSES>                           0              0               0
<LOSS-PROVISION>                           0              0               0
<INTEREST-EXPENSE>                        71            453             574
<INCOME-PRETAX>                         9449          27326           38847
<INCOME-TAX>                            2806           8166           11615
<INCOME-CONTINUING>                     6643          19160           27232
<DISCONTINUED>                             0              0               0
<EXTRAORDINARY>                            0              0               0
<CHANGES>                                  0              0               0
<NET-INCOME>                            6643          19160            8072
<EPS-PRIMARY>                            .09<F1>        .25<F3>         .11<F5>
<EPS-DILUTED>                            .08<F2>        .24<F4>         .10<F6>
<FN>
<F1>EPS amounts have been restated for stock splits which occurred on August 28,
1996 and October 27, 1997.
<F2>EPS amounts have been restated for stock splits which occurred on August 28,
1996 and October 27, 1997.
<F3>EPS amounts have been restated for a stock split which occurred on 
October 27, 1997.
<F4>EPS amounts have been restated for a stock split which occurred on 
October 27, 1997.
<F5>EPS amounts have been restated for a stock split which occurred on 
October 27, 1997.
<F6>EPS amounts have been restated for a stock split which occurred on 
October 27, 1997.
</FN>
        

</TABLE>