<ARTICLE> 5
<RESTATED> 
       
                                                                                            
<PERIOD-TYPE>                   3-MOS                   6-MOS                   9-MOS                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997             DEC-31-1997             DEC-31-1997
<PERIOD-START>                             JAN-01-1997             APR-01-1997             JUL-01-1997             JAN-01-1997
<PERIOD-END>                               MAR-31-1997             JUN-30-1997             SEP-30-1997             DEC-31-1997
<CASH>                                      21,021,413              26,310,062              20,825,448              31,556,759
<SECURITIES>                                         0                       0                       0                       0
<RECEIVABLES>                                4,101,088               4,314,954              14,572,582               5,352,284
<ALLOWANCES>                                         0                       0                       0                       0
<INVENTORY>                                  4,571,288               6,859,736               9,569,416              10,334,113
<CURRENT-ASSETS>                                     0                       0                       0                       0
<PP&E>                                     102,391,049             117,546,977             126,432,420             139,076,499
<DEPRECIATION>                              16,916,370              17,889,517              17,328,284              15,542,792
<TOTAL-ASSETS>                             133,453,652             156,332,456             173,018,456             198,430,056
<CURRENT-LIABILITIES>                                0                       0                       0                       0
<BONDS>                                              0                       0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0                       0
<PREFERRED>                                          0                       0                       0                       0
<COMMON>                                    16,103,946              16,163,946              16,276,933              40,117,223
<OTHER-SE>                                  10,169,633              11,435,632              12,886,567              14,484,234
<TOTAL-LIABILITY-AND-EQUITY>               133,453,652             156,332,456             173,018,456             198,430,056
<SALES>                                      4,796,520              11,255,983               8,181,648              26,857,942
<TOTAL-REVENUES>                             9,533,501              15,886,047              14,368,507              51,206,744
<CGS>                                        3,556,669               8,788,294               6,077,883              20,146,669
<TOTAL-COSTS>                                6,087,161              11,621,455               9,514,231              33,060,262
<OTHER-EXPENSES>                             1,785,915               2,156,920               2,434,013               9,331,972
<LOSS-PROVISION>                                     0                       0                       0                       0
<INTEREST-EXPENSE>                                   0                       0                       0                       0
<INCOME-PRETAX>                              1,660,284               2,107,672               2,420,263               8,814,510
<INCOME-TAX>                                   645,284                 841,674                 969,327               3,484,768
<INCOME-CONTINUING>                                  0                       0                       0                       0
<DISCONTINUED>                                       0                       0                       0                       0
<EXTRAORDINARY>                              2,007,929                       0                       0               2,007,929
<CHANGES>                                            0                       0                       0                       0
<NET-INCOME>                                 3,023,070               1,265,998               1,450,936               7,337,671
<EPS-PRIMARY>                                      .56                     .23                     .27                    1.33
<EPS-DILUTED>                                      .54                     .23                     .26                    1.29