<ARTICLE> 5
<MULTIPLIER>                                         1,000

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                              DEC-31-1999
<PERIOD-START>                                 JAN-01-1999
<PERIOD-END>                                   SEP-30-1999
<CASH>                                              32,932
<SECURITIES>                                        27,691
<RECEIVABLES>                                       39,848
<ALLOWANCES>                                         2,950
<INVENTORY>                                              0
<CURRENT-ASSETS>                                         0
<PP&E>                                           2,849,838
<DEPRECIATION>                                     310,840
<TOTAL-ASSETS>                                   2,913,658
<CURRENT-LIABILITIES>                                    0
<BONDS>                                          1,140,844
<PREFERRED-MANDATORY>                                    0
<PREFERRED>                                          1,329
<COMMON>                                               607
<OTHER-SE>                                       1,603,020
<TOTAL-LIABILITY-AND-EQUITY>                     2,913,658
<SALES>                                            324,992
<TOTAL-REVENUES>                                   324,992
<CGS>                                               84,692
<TOTAL-COSTS>                                       84,692
<OTHER-EXPENSES>                                         0
<LOSS-PROVISION>                                         0
<INTEREST-EXPENSE>                                  62,872
<INCOME-PRETAX>                                    127,543
<INCOME-TAX>                                             0
<INCOME-CONTINUING>                                127,543
<DISCONTINUED>                                           0
<EXTRAORDINARY>                                          0
<CHANGES>                                                0
<NET-INCOME>                                       127,543
<EPS-BASIC>                                           1.78
<EPS-DILUTED>                                         1.77
<FN>
Financial Data Schedule information has been extracted from the Registrant's
Condensed Consolidated Balance Sheet (non-classified) as of September 30, 1999
and the Consolidated Statement of Income for the nine months then ended.
</FN>