<TABLE> <S> <C>

<ARTICLE>5
<MULTIPLIER>1

       
<S>                                                 <C>                <C>                 <C>                <C>
<PERIOD-TYPE>                                     3-MOS              3-MOS               6-MOS              9-MOS
<FISCAL-YEAR-END>                           DEC-31-1998        DEC-31-1997         DEC-31-1997        DEC-31-1997
<PERIOD-START>                              JAN-01-1998        JAN-01-1997         JAN-01-1997        JAN-01-1997
<PERIOD-END>                                MAR-31-1998        MAR-31-1997         JUN-30-1997        SEP-30-1997
<CASH>                                       20,205,000          9,141,000          10,550,000          5,053,000
<SECURITIES>                                          0                  0                   0                  0
<RECEIVABLES>                                 2,900,000          1,562,000           1,830,000          2,643,000
<ALLOWANCES>                                     80,000             20,000              20,000             24,000
<INVENTORY>                                           0                  0                   0                  0
<CURRENT-ASSETS>                             23,460,000         11,460,000          13,040,000          8,631,000
<PP&E>                                      861,244,000        318,896,000         409,557,000        546,630,000
<DEPRECIATION>                               23,450,000          9,175,000          11,106,000         14,117,000
<TOTAL-ASSETS>                              927,897,000        396,649,000         493,829,000        630,324,000
<CURRENT-LIABILITIES>                       128,456,000         27,762,000          34,075,000         78,474,000
<BONDS>                                               0                  0                   0                  0
<PREFERRED-MANDATORY>                                 0                  0                   0                  0
<PREFERRED>                                           0                  0                   0                  0
<COMMON>                                        382,000            212,000             235,000            254,000
<OTHER-SE>                                  484,931,000        229,064,000         264,649,000        291,615,000
<TOTAL-LIABILITY-AND-EQUITY>                927,897,000        396,649,000         493,829,000        630,324,000
<SALES>                                               0                  0                   0                  0
<TOTAL-REVENUES>                             27,788,000         11,087,000          25,043,000         41,250,000
<CGS>                                                 0                  0                   0                  0
<TOTAL-COSTS>                                23,419,000          9,710,000          21,718,000         36,188,000
<OTHER-EXPENSES>                                      0                  0                   0                  0
<LOSS-PROVISION>                                      0                  0                   0                  0
<INTEREST-EXPENSE>                            2,970,000                  0                   0                  0
<INCOME-PRETAX>                               1,688,000          1,523,000           3,618,000          5,483,000
<INCOME-TAX>                                          0                  0                   0                  0
<INCOME-CONTINUING>                           1,688,000          1,523,000           3,618,000          5,483,000
<DISCONTINUED>                                        0                  0                   0                  0
<EXTRAORDINARY>                                       0                  0                   0                  0
<CHANGES>                                             0                  0                   0                  0
<NET-INCOME>                                  1,688,000          1,523,000           3,618,000          5,483,000
<EPS-PRIMARY>                                       .05               0.07                0.17               0.24
<EPS-DILUTED>                                       .05               0.04                0.10               0.14
        
<FN>                                       
 NOTE:    BASIC EPS FOR PERIODS ENDED MARCH 31, JUNE 30, AND SEPTEMBER 30, 1997 
          REFLECT RESTATEMENT IN ACCORDANCE WITH SFAS 128
</FN>

</TABLE>