<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
Consolidated Balance Sheet at December 31, 1997 (audited) and the
Consolidated Statement of Operations for the year ended 
December 31, 1997 (unaudited) and is qualified in its entirety by
reference to such financial statements.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                              JAN-1-1997
<PERIOD-END>                               DEC-31-1997
<CASH>                                           3,124
<SECURITIES>                                         0
<RECEIVABLES>                                   14,012
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                     0
<PP&E>                                               0
<DEPRECIATION>                                 145,641
<TOTAL-ASSETS>                               1,245,025
<CURRENT-LIABILITIES>                                0
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           241
<OTHER-SE>                                     330,612
<TOTAL-LIABILITY-AND-EQUITY>                 1,245,025
<SALES>                                              0
<TOTAL-REVENUES>                               177,604
<CGS>                                                0
<TOTAL-COSTS>                                        0
<OTHER-EXPENSES>                                97,370
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              37,830
<INCOME-PRETAX>                                 36,032
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                             36,032
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                  1,092
<CHANGES>                                            0
<NET-INCOME>                                    34,941
<EPS-PRIMARY>                                     1.46
<EPS-DILUTED>                                     1.45