<ARTICLE> 5 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-2000 <PERIOD-START> JAN-01-2000 <PERIOD-END> SEP-30-2000 <CASH> 3,751,567 <SECURITIES> 0 <RECEIVABLES> 0 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 3,751,567 <PP&E> 22,395,185 <DEPRECIATION> 20,424,677 <TOTAL-ASSETS> 5,722,075 <CURRENT-LIABILITIES> 1,198,786 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 4,523,289 <TOTAL-LIABILITY-AND-EQUITY> 5,722,075 <SALES> 24,744,547 <TOTAL-REVENUES> 24,909,365 <CGS> 0 <TOTAL-COSTS> 1,184,392 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 23,724,973 <INCOME-TAX> 0 <INCOME-CONTINUING> 0 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 23,724,973 <EPS-BASIC> 1.63 <EPS-DILUTED> 1.63