At July 31,                           
                                                     2009                2008              
 Net Assets (a)                                      $  435,535,147      $  513,149,623    
 Common Shares Outstanding                              24,934,641          24,817,141     
 Net Asset Value ("NAV")                             $  9.85             $  12.62          
 Market Price                                        $  12.38            $  16.04          
 Premium to NAV                                         25.69        %      27.10        % 
 Undistributed (Overdistributed) Net Investment                                            
 Income Per Common Share (b)                         $  0.0537           $  (0.0216      ) 
                                                                                           
                                                                                           
                                                     Quarter ended July 31,                
                                                     2009                2008              
 Net Investment Income                               $  7,668,180        $  6,949,228      
 Per Common Share                                    $  0.31             $  0.28           
 Net Realized and Change in Unrealized Gain (Loss)   $  10,281,644       $  (8,042,315   ) 
 Per Common Share                                    $  0.41             $  (0.32        ) 


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(a) Net assets are inclusive of market value of Preferred Shares of $190 million and $200 million at July 31, 2009 and July 31, 2008, respectively.

(b) Since net earning rates fluctuate from month to month while monthly dividends have remained relatively stable, there will be periods when the Fund may over-earn or under-earn its monthly dividend, which would have the effect of adding to or subtracting from the Fund's undistributed (overdistributed) net investment income balance. Fund management analyzes the current and projected net earning rates prior to recommending dividend amounts to the Fund's Board of Trustees for declaration.