<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND> This schedule contains summary financial information extracted from
its September 30, 2000 Form 10-Q and is qualified in its entirety by reference
to such financial statements.
</LEGEND>
<S> <C> <C>
<PERIOD-TYPE> 3-MOS 9-MOS
<FISCAL-YEAR-END> DEC-31-2000 DEC-31-2000
<PERIOD-START> JUL-01-2000 JAN-01-2000
<PERIOD-END> SEP-30-2000 SEP-30-2000
<CASH> 274,339 274,339
<SECURITIES> 334,329 334,329
<RECEIVABLES> 34,696 34,696
<ALLOWANCES> 0 0
<INVENTORY> 0 0
<CURRENT-ASSETS> 643,364 643,364
<PP&E> 3,803,639 3,803,639
<DEPRECIATION> 827,661 827,661
<TOTAL-ASSETS> 3,619,342 3,619,342
<CURRENT-LIABILITIES> 83,864 83,864
<BONDS> 0 0
0 0
0 0
<COMMON> 0 0
<OTHER-SE> 3,535,478 3,535,478
<TOTAL-LIABILITY-AND-EQUITY> 3,619,342 3,619,342
<SALES> 101,925 306,335
<TOTAL-REVENUES> 111,152 331,729
<CGS> 0 0
<TOTAL-COSTS> 0 0
<OTHER-EXPENSES> 54,611 184,863
<LOSS-PROVISION> 0 0
<INTEREST-EXPENSE> 0 0
<INCOME-PRETAX> 56,541 146,866
<INCOME-TAX> 0 0
<INCOME-CONTINUING> 56,541 146,866
<DISCONTINUED> 0 0
<EXTRAORDINARY> 0 0
<CHANGES> 0 0
<NET-INCOME> 56,541 146,866
<EPS-BASIC> 3.27 8.50
<EPS-DILUTED> 3.27 8.50
</TABLE>