<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FORM 10Q AND
IS QUALIFIED IN TIS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.

<MULTIPLIER> 1,000

                                                  
<PERIOD-TYPE>                   6-MOS                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-2000             DEC-31-1999
<PERIOD-START>                             JAN-01-2000             JAN-01-1999
<PERIOD-END>                               JUN-30-2000             JUN-30-1999
<CASH>                                          16,518                   9,004
<SECURITIES>                                         0                       0
<RECEIVABLES>                                   27,314                  19,063
<ALLOWANCES>                                   (1,693)                 (1,394)
<INVENTORY>                                          0                       0
<CURRENT-ASSETS>                                     0                       0
<PP&E>                                       1,467,565               1,311,212
<DEPRECIATION>                               (189,410)               (158,503)
<TOTAL-ASSETS>                               1,423,063               1,208,541
<CURRENT-LIABILITIES>                                0                       0
<BONDS>                                        191,034                 490,298
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                           265                     276
<OTHER-SE>                                     439,559                 474,391
<TOTAL-LIABILITY-AND-EQUITY>                 1,423,063               1,208,541
<SALES>                                              0                       0
<TOTAL-REVENUES>                                89,123                  76,851
<CGS>                                                0                       0
<TOTAL-COSTS>                                   42,911                  36,187
<OTHER-EXPENSES>                                     0                       0
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                              17,776                  11,919
<INCOME-PRETAX>                                 28,436                  28,745
<INCOME-TAX>                                         0                       0
<INCOME-CONTINUING>                             28,436                  28,745
<DISCONTINUED>                                   3,968                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                    22,381<F1>              20,706
<EPS-BASIC>                                       0.84                    0.75
<EPS-DILUTED>                                     0.84                    0.75

<F1>NET INCOME INCLUDES ($10,006) OF MINORITY INTERESTS AND ($17) EQUITY IN LOSS
OF UNCONSOLIDATED SUBSIDIARY.