<TABLE> <S> <C>

<PAGE>
 

<ARTICLE> 5
<LEGEND> 
This schedule contains summary financial information extracted from September
30, 1996 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-31-1995             DEC-31-1995        
<PERIOD-START>                     JUL-01-1996             JAN-01-1996        
<PERIOD-END>                       SEP-30-1996             SEP-30-1996        
<CASH>                                        2,977,084              2,977,084
<SECURITIES>                                    286,486                286,486
<RECEIVABLES>                                 7,104,132              7,104,132
<ALLOWANCES>                                  6,065,686              6,065,686
<INVENTORY>                                           0                      0
<CURRENT-ASSETS>                              4,302,016              4,302,016
<PP&E>                                       26,425,786             26,425,786
<DEPRECIATION>                                5,427,753              5,427,753
<TOTAL-ASSETS>                               25,300,049             25,300,049
<CURRENT-LIABILITIES>                           426,572                426,572
<BONDS>                                               0                      0
<COMMON>                                              0                      0
<PREFERRED-MANDATORY>                                 0                      0
<PREFERRED>                                           0                      0
<OTHER-SE>                                   24,873,477             24,873,477
<TOTAL-LIABILITY-AND-EQUITY>                 25,300,049             25,300,049
<SALES>                                         871,916              2,520,242
<TOTAL-REVENUES>                              1,386,744              4,239,852
<CGS>                                                 0                      0
<TOTAL-COSTS>                                         0                      0
<OTHER-EXPENSES>                                329,321              1,491,322
<LOSS-PROVISION>                                      0                      0
<INTEREST-EXPENSE>                                    0                  3,551
<INCOME-PRETAX>                               1,057,423              2,744,979
<INCOME-TAX>                                          0                      0
<INCOME-CONTINUING>                           1,057,423              2,744,979
<DISCONTINUED>                                        0                      0
<EXTRAORDINARY>                                       0                      0
<CHANGES>                                             0                      0
<NET-INCOME>                                  1,057,423              2,744,979
<EPS-PRIMARY>                                     22.62                  58.72
<EPS-DILUTED>                                     22.62                  58.72 
        
                                  


</TABLE>