<TABLE> <S> <C>
<ARTICLE> 5
<S> <C> <C>
<PERIOD-TYPE> 9-MOS 9-MOS
<FISCAL-YEAR-END> DEC-31-2000 DEC-31-1999
<PERIOD-END> SEP-30-2000 SEP-30-1999
<CASH> 34,175,250 6,957,672
<SECURITIES> 36,998,971 32,868,158
<RECEIVABLES> 17,250,510 18,536,528
<ALLOWANCES> 107,500 107,500
<INVENTORY> 3,176,464 2,666,858
<CURRENT-ASSETS> 56,296,455 25,349,607
<PP&E> 257,963,740 213,503,249
<DEPRECIATION> 114,880,456 103,463,342
<TOTAL-ASSETS> 281,765,216 209,459,250
<CURRENT-LIABILITIES> 32,038,905 20,391,286
<BONDS> 39,000,000 20,000,000
112,500 125,000
397,000 398,000
<COMMON> 42,472,662 38,206,596
<OTHER-SE> 138,145,920 101,270,682
<TOTAL-LIABILITY-AND-EQUITY> 281,765,216 209,459,250
<SALES> 0 0
<TOTAL-REVENUES> 85,450,227 78,028,257
<CGS> 0 0
<TOTAL-COSTS> 72,698,987 61,293,929
<OTHER-EXPENSES> (52,781,043) (15,644,270)
<LOSS-PROVISION> 0 0
<INTEREST-EXPENSE> 3,058,192 1,928,610
<INCOME-PRETAX> 62,474,091 30,449,988
<INCOME-TAX> 24,970,647 12,422,328
<INCOME-CONTINUING> 37,503,444 18,027,660
<DISCONTINUED> 0 0
<EXTRAORDINARY> 0 0
<CHANGES> 0 0
<NET-INCOME> 37,503,444 18,027,660
<EPS-BASIC> 1.99 0.96
<EPS-DILUTED> 1.98 0.96
</TABLE>