<TABLE> <S> <C>
<ARTICLE> 5
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> JUN-30-2000
<CASH> 6,479,224
<SECURITIES> 0
<RECEIVABLES> 100,182,901
<ALLOWANCES> 0
<INVENTORY> 1,110,482
<CURRENT-ASSETS> 115,364,840
<PP&E> 1,114,359,603
<DEPRECIATION> 265,485,794
<TOTAL-ASSETS> 975,973,986
<CURRENT-LIABILITIES> 142,982,964
<BONDS> 566,163,307
0
0
<COMMON> 19,714
<OTHER-SE> 186,046,200
<TOTAL-LIABILITY-AND-EQUITY> 975,973,986
<SALES> 172,640,087
<TOTAL-REVENUES> 178,294,877
<CGS> 44,371,430
<TOTAL-COSTS> 74,282,998
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 24,853,284
<INCOME-PRETAX> 34,787,165
<INCOME-TAX> 13,253,910
<INCOME-CONTINUING> 21,533,255
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 21,533,255
<EPS-BASIC> 1.16
<EPS-DILUTED> 1.12
</TABLE>