<TABLE> <S> <C>

<ARTICLE> 5
<RESTATED> 
       
<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   3-MOS                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997             DEC-31-1997
<PERIOD-START>                             JAN-01-1997             APR-01-1997             JUL-01-1997
<PERIOD-END>                               MAR-31-1997             JUN-30-1997             SEP-30-1997
<CASH>                                      25,568,000               5,554,000               3,484,000
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                               95,000,000              77,933,000             103,017,000
<ALLOWANCES>                               (1,674,000)             (1,063,000)             (1,229,000)
<INVENTORY>                                          0                       0                       0
<CURRENT-ASSETS>                                     0                       0                       0
<PP&E>                                     483,735,000             692,406,000             753,008,000
<DEPRECIATION>                            (24,044,000)            (27,866,000)            (30,831,000)
<TOTAL-ASSETS>                             590,859,000             759,287,000             845,675,000
<CURRENT-LIABILITIES>                                0                       0                       0
<BONDS>                                    156,028,000             286,388,000             303,419,000
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                     46,000                  46,000                  46,000
<COMMON>                                       183,000                 184,000                 209,000
<OTHER-SE>                                 427,933,000             430,143,000             498,451,000
<TOTAL-LIABILITY-AND-EQUITY>               590,859,000             759,287,000             845,675,000
<SALES>                                              0                       0                       0
<TOTAL-REVENUES>                            20,204,000              23,461,000              27,360,000
<CGS>                                                0                       0                       0
<TOTAL-COSTS>                                9,894,000              12,563,000              13,635,000
<OTHER-EXPENSES>                                     0                       0               1,239,000
<LOSS-PROVISION>                               298,000                 167,000                 167,000
<INTEREST-EXPENSE>                           4,321,000               5,514,000               5,877,000
<INCOME-PRETAX>                             10,310,000              11,191,000              12,646,000
<INCOME-TAX>                                         0                       0                       0
<INCOME-CONTINUING>                         10,310,000              11,191,000              12,646,000
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                10,310,000              11,191,000              12,646,000
<EPS-PRIMARY>                                     0.48<F1>                0.47                    0.50
<EPS-DILUTED>                                     0.46                    0.46                    0.48
<FN>
<F1> For Purposes of This Exhibit, Primary means Basic.
</FN>
        

</TABLE>