<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FORM 10-Q
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                                                  
<PERIOD-TYPE>                   9-MOS                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1997
<PERIOD-START>                             JAN-01-1998             JAN-01-1997
<PERIOD-END>                               SEP-30-1998             SEP-30-1997
<CASH>                                          27,311                   8,929
<SECURITIES>                                         0                       0
<RECEIVABLES>                                   19,951                   7,875
<ALLOWANCES>                                     (494)                   (508)
<INVENTORY>                                          0                       0
<CURRENT-ASSETS>                                     0                       0
<PP&E>                                       1,132,158                 834,690
<DEPRECIATION>                               (139,170)               (121,780)
<TOTAL-ASSETS>                               1,063,670                 757,654
<CURRENT-LIABILITIES>                                0                       0
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                           276                     245
<OTHER-SE>                                     476,122                 396,905
<TOTAL-LIABILITY-AND-EQUITY>                 1,063,670                 757,654
<SALES>                                              0                       0
<TOTAL-REVENUES>                                96,990                  45,701
<CGS>                                                0                       0
<TOTAL-COSTS>                                   45,878                  22,310
<OTHER-EXPENSES>                                     0                       0
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                              14,642                   8,609
<INCOME-PRETAX>                                 36,470                  14,782
<INCOME-TAX>                                         0                       0
<INCOME-CONTINUING>                             36,470                  14,782
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                   3,204
<CHANGES>                                            0                       0
<NET-INCOME>                                    28,649<F1>              15,942
<EPS-PRIMARY>                                     1.07                    0.82
<EPS-DILUTED>                                     1.07                    0.81
        
<FN>
<F1>NET INCOME IS AFTER EQUITY IN LOSS OF UNCONSOLIDATED SUBSIDIARY OF ($24) AND
MINORITY INTERESTS OF ($7,797)
</FN>