| 
    
        
            | 
                    Closing price on 5/11/2010
                 |  |  
    
        |           
                
                    | Open | 36.00 |  
                    | High | 36.00 |  
                    | Low | 35.00 |  
                    | Volume | 1,480,570 |  
                    | Split-adjusted Price | 35.00 |  
                
             | 
 |  OGC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 5/11/2010 | -0.50 / -1.41% | 36.00 | 36.00 | 35.00 | 35.00 | 35.00 | 35.00 | 1,480,570 |   |  
            | 5/10/2010 | +0.10 / +0.28% | 35.00 | 35.50 | 33.70 | 35.50 | 35.50 | 35.50 | 2,541,710 |   |  			
            | 5/7/2010 | -1.50 / -4.07% | 35.30 | 36.50 | 35.20 | 35.40 | 35.40 | 35.40 | 1,031,810 |   |  
            | 5/6/2010 | +0.40 / +1.10% | 36.70 | 37.00 | 36.50 | 36.90 | 36.90 | 36.90 | 1,677,620 |   |  			
            | 5/5/2010 | +0.50 / +1.39% | 36.50 | 37.00 | 35.50 | 36.50 | 36.50 | 36.50 | 1,883,710 |   |  
            | 5/4/2010 | +36.00 / +0.00% | 30.00 | 36.00 | 30.00 | 36.00 | 36.00 | 36.00 | 8,095,170 |   |  |