<ARTICLE>                     5
       
                                                         
<PERIOD-TYPE>                                  3-MOS           12-MOS
<FISCAL-YEAR-END>                              DEC-31-1997     DEC-31-1997
<PERIOD-START>                                 OCT-01-1997     JAN-01-1997
<PERIOD-END>                                   DEC-31-1997     DEC-31-1997
<CASH>                                         19,487,000      19,487,000
<SECURITIES>                                   0               0
<RECEIVABLES>                                  27,328,000      27,328,000
<ALLOWANCES>                                   555,000         555,000
<INVENTORY>                                    0               0
<CURRENT-ASSETS>                               63,867,000      63,867,000
<PP&E>                                         2,702,159,000   2,702,159,000
<DEPRECIATION>                                 87,505,000      87,505,000
<TOTAL-ASSETS>                                 2,722,306,000   2,722,306,000
<CURRENT-LIABILITIES>                          55,121,000      55,121,000
<BONDS>                                        978,558,000     978,558,000
<PREFERRED-MANDATORY>                          0               0
<PREFERRED>                                    297,500,000     297,500,000
<COMMON>                                       468,000         468,000
<OTHER-SE>                                     1,390,659,000   1,390,657,000
<TOTAL-LIABILITY-AND-EQUITY>                   2,722,306,000   2,722,306,000
<SALES>                                        89,687,000      266,933,000
<TOTAL-REVENUES>                               91,256,000      274,470,000
<CGS>                                          27,748,000      76,743,000
<TOTAL-COSTS>                                  44,230,000      124,276,000
<OTHER-EXPENSES>                               3,522,000       10,216,000
<LOSS-PROVISION>                               0               0
<INTEREST-EXPENSE>                             12,623,000      47,394,000
<INCOME-PRETAX>                                25,647,000      77,478,000
<INCOME-TAX>                                   0               0
<INCOME-CONTINUING>                            25,647,000      77,478,000
<DISCONTINUED>                                 0               0
<EXTRAORDINARY>                                1,134,000       5,799,000
<CHANGES>                                      0               0
<NET-INCOME>                                   18,368,000      58,562,000
<EPS-PRIMARY>                                  0.39            1.51
<EPS-DILUTED>                                  0.38            1.50