<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM CONSOLIDATED
BALANCE SHEET AS OF SEPTEMBER 30, 1999 AND DECEMBER 31, 1998 AND CONSOLIDATED
STATEMENTS OF INCOME FOR THE THREE AND NINE MONTHS ENDED SEPTEMBER 30, 1999 AND
1998 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   3-MOS                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999             DEC-31-1998             DEC-31-1999
<PERIOD-START>                             JUL-01-1999             JUL-01-1998             JAN-01-1999
<PERIOD-END>                               SEP-30-1999             SEP-30-1998             SEP-30-1999
<CASH>                                           8,324                       0                       0
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                    4,595                       0                       0
<ALLOWANCES>                                         0                       0                       0
<INVENTORY>                                          0                       0                       0
<CURRENT-ASSETS>                                     0<F1>                   0                       0
<PP&E>                                         371,451                       0                       0
<DEPRECIATION>                                  37,984                       0                       0
<TOTAL-ASSETS>                                 434,745                       0                       0
<CURRENT-LIABILITIES>                           10,865<F2>                   0                       0
<BONDS>                                        223,164                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                     20,000                       0                       0
<COMMON>                                            77                       0                       0
<OTHER-SE>                                     110,243                       0                       0
<TOTAL-LIABILITY-AND-EQUITY>                   434,745                       0                       0
<SALES>                                              0                       0                       0
<TOTAL-REVENUES>                                14,104                  12,039                  41,149
<CGS>                                                0                       0                       0
<TOTAL-COSTS>                                    5,790                   4,393                  16,519
<OTHER-EXPENSES>                                 (377)<F3>                (162)<F3>               (750)<F3>
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                               4,030                   3,139                  11,538
<INCOME-PRETAX>                                  2,876                   2,779                   8,507
<INCOME-TAX>                                         0                       0                       0
<INCOME-CONTINUING>                              2,876                   2,779                   8,507
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                     2,413<F4>               2,779<F4>               7,587<F4>
<EPS-BASIC>                                        .31                     .36                     .98
<EPS-DILUTED>                                      .31                     .35                     .98
<FN>
<F1> AS A REIT WE DO HAVE A CLASSIFIED BALANCE SHEET
<F2> AS A REIT WE DO HAVE A CLASSIFIED BALANCE SHEET
<F3> INTEREST INCOME AND LOSS ON DISPOSAL OF ASSETS
<F4> NET INCOME AFTER PREFERRED DIVIDENDS
</FN>


</TABLE>