<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
condensed financial statements for the three month period ended March 31, 1998,
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          MAR-31-1998
<PERIOD-END>                               MAR-31-1998
<CASH>                                          $1,453
<SECURITIES>                                         0
<RECEIVABLES>                                   18,757
<ALLOWANCES>                                       145
<INVENTORY>                                          0
<CURRENT-ASSETS>                                44,125
<PP&E>                                       1,883,764
<DEPRECIATION>                                 360,183
<TOTAL-ASSETS>                               1,580,473
<CURRENT-LIABILITIES>                          213,550
<BONDS>                                        869,152
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         8,509
<OTHER-SE>                                     443,122
<TOTAL-LIABILITY-AND-EQUITY>                 1,580,473
<SALES>                                              0
<TOTAL-REVENUES>                               133,326
<CGS>                                                0
<TOTAL-COSTS>                                   65,959
<OTHER-EXPENSES>                                16,823
<LOSS-PROVISION>                                   556
<INTEREST-EXPENSE>                              14,129
<INCOME-PRETAX>                                 30,700
<INCOME-TAX>                                    11,205
<INCOME-CONTINUING>                             19,495
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    19,495
<EPS-PRIMARY>                                      .25
<EPS-DILUTED>                                      .24