| 
                 
                    Closing price on 12/20/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    9.70 | 
                 
                
                    | High | 
                    10.20 | 
                 
                
                    | Low | 
                    9.60 | 
                     
                
                    | Volume | 
                    12,100 | 
                                 
                
                    | Split-adjusted Price | 
                    9.80 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SD7 Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                12/20/2011
             | 
            
                -0.50 / -4.85%
             |             
            
                9.70
             |           
            
                10.20
             |               
            
                9.60
             |                           
            
                9.80
             | 
            
                9.80
             |                     
            
                9.80
             |                                 
            
                12,100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/19/2011
             | 
            
                -0.20 / -1.90%
             |             
            
                10.70
             |           
            
                10.70
             |               
            
                10.00
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                10.30
             |                                 
            
                5,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/16/2011
             | 
            
                +0.40 / +3.96%
             |             
            
                10.10
             |           
            
                10.70
             |               
            
                10.10
             |                           
            
                10.50
             | 
            
                10.50
             |                     
            
                10.50
             |                                 
            
                9,100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/15/2011
             | 
            
                -0.50 / -4.72%
             |             
            
                10.10
             |           
            
                10.30
             |               
            
                10.10
             |                           
            
                10.10
             | 
            
                10.10
             |                     
            
                10.10
             |                                 
            
                16,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/14/2011
             | 
            
                -0.50 / -4.50%
             |             
            
                11.10
             |           
            
                11.10
             |               
            
                10.60
             |                           
            
                10.60
             | 
            
                10.60
             |                     
            
                10.60
             |                                 
            
                11,100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/13/2011
             | 
            
                -0.10 / -0.89%
             |             
            
                11.30
             |           
            
                11.30
             |               
            
                11.00
             |                           
            
                11.10
             | 
            
                11.10
             |                     
            
                11.10
             |                                 
            
                4,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/12/2011
             | 
            
                -0.20 / -1.75%
             |             
            
                11.40
             |           
            
                11.40
             |               
            
                11.20
             |                           
            
                11.20
             | 
            
                11.20
             |                     
            
                11.20
             |                                 
            
                9,100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/9/2011
             | 
            
                -0.30 / -2.56%
             |             
            
                11.70
             |           
            
                11.70
             |               
            
                11.40
             |                           
            
                11.40
             | 
            
                11.40
             |                     
            
                11.40
             |                                 
            
                22,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/8/2011
             | 
            
                -0.30 / -2.50%
             |             
            
                12.00
             |           
            
                12.00
             |               
            
                11.70
             |                           
            
                11.70
             | 
            
                11.70
             |                     
            
                11.70
             |                                 
            
                1,700
             |            
            
                 
             |                                       
         
    
        
            | 
                12/7/2011
             | 
            
                -0.10 / -0.83%
             |             
            
                12.00
             |           
            
                12.00
             |               
            
                12.00
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                12.00
             |                                 
            
                1,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/6/2011
             | 
            
                -0.20 / -1.63%
             |             
            
                12.90
             |           
            
                13.00
             |               
            
                12.00
             |                           
            
                12.10
             | 
            
                12.10
             |                     
            
                12.10
             |                                 
            
                17,300
             |            
            
                 
             |                                       
         
    
        
            | 
                12/5/2011
             | 
            
                +0.60 / +5.13%
             |             
            
                11.80
             |           
            
                12.30
             |               
            
                11.80
             |                           
            
                12.30
             | 
            
                12.30
             |                     
            
                12.30
             |                                 
            
                30,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/2/2011
             | 
            
                +0.40 / +3.54%
             |             
            
                11.40
             |           
            
                11.70
             |               
            
                11.40
             |                           
            
                11.70
             | 
            
                11.70
             |                     
            
                11.70
             |                                 
            
                4,600
             |            
            
                 
             |                                       
         
    
        
            | 
                12/1/2011
             | 
            
                -0.20 / -1.74%
             |             
            
                11.30
             |           
            
                11.50
             |               
            
                11.30
             |                           
            
                11.30
             | 
            
                11.30
             |                     
            
                11.30
             |                                 
            
                5,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/30/2011
             | 
            
                -0.40 / -3.36%
             |             
            
                11.50
             |           
            
                11.50
             |               
            
                11.40
             |                           
            
                11.50
             | 
            
                11.50
             |                     
            
                11.50
             |                                 
            
                4,000
             |            
            
                 
             |                                       
         
    
        
            | 
                11/29/2011
             | 
            
                0.00 / 0.00%
             |             
            
                11.90
             |           
            
                11.90
             |               
            
                11.90
             |                           
            
                11.90
             | 
            
                11.90
             |                     
            
                11.90
             |                                 
            
                900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/28/2011
             | 
            
                +0.60 / +5.31%
             |             
            
                12.00
             |           
            
                12.00
             |               
            
                11.20
             |                           
            
                11.90
             | 
            
                11.90
             |                     
            
                11.90
             |                                 
            
                3,700
             |            
            
                 
             |                                       
         
    
        
            | 
                11/25/2011
             | 
            
                0.00 / 0.00%
             |             
            
                11.30
             |           
            
                11.30
             |               
            
                11.30
             |                           
            
                11.30
             | 
            
                11.30
             |                     
            
                11.30
             |                                 
            
                4,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/24/2011
             | 
            
                -0.20 / -1.74%
             |             
            
                11.40
             |           
            
                11.50
             |               
            
                11.30
             |                           
            
                11.30
             | 
            
                11.30
             |                     
            
                11.30
             |                                 
            
                4,000
             |            
            
                 
             |                                       
         
    
        
            | 
                11/23/2011
             | 
            
                +0.20 / +1.77%
             |             
            
                11.30
             |           
            
                11.80
             |               
            
                11.30
             |                           
            
                11.50
             | 
            
                11.50
             |                     
            
                11.50
             |                                 
            
                2,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/22/2011
             | 
            
                -0.50 / -4.24%
             |             
            
                11.20
             |           
            
                11.30
             |               
            
                11.20
             |                           
            
                11.30
             | 
            
                11.30
             |                     
            
                11.30
             |                                 
            
                3,500
             |            
            
                 
             |                                       
         
    
        
            | 
                11/21/2011
             | 
            
                +0.10 / +0.85%
             |             
            
                11.40
             |           
            
                11.80
             |               
            
                11.40
             |                           
            
                11.80
             | 
            
                11.80
             |                     
            
                11.80
             |                                 
            
                3,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/18/2011
             | 
            
                -0.30 / -2.50%
             |             
            
                11.50
             |           
            
                11.70
             |               
            
                11.40
             |                           
            
                11.70
             | 
            
                11.70
             |                     
            
                11.70
             |                                 
            
                14,300
             |            
            
                 
             |                                       
         
    
        
            | 
                11/17/2011
             | 
            
                -0.40 / -3.23%
             |             
            
                11.90
             |           
            
                12.00
             |               
            
                11.80
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                12.00
             |                                 
            
                6,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/16/2011
             | 
            
                +0.60 / +5.08%
             |             
            
                12.10
             |           
            
                12.40
             |               
            
                11.90
             |                           
            
                12.40
             | 
            
                12.40
             |                     
            
                12.40
             |                                 
            
                6,200
             |            
            
                 
             |                                       
         
    
        
            | 
                11/15/2011
             | 
            
                0.00 / 0.00%
             |             
            
                12.00
             |           
            
                12.10
             |               
            
                11.70
             |                           
            
                11.80
             | 
            
                11.80
             |                     
            
                11.80
             |                                 
            
                10,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/14/2011
             | 
            
                -0.70 / -5.60%
             |             
            
                12.00
             |           
            
                12.00
             |               
            
                11.80
             |                           
            
                11.80
             | 
            
                11.80
             |                     
            
                11.80
             |                                 
            
                1,800
             |            
            
                 
             |                                       
         
    
        
            | 
                11/11/2011
             | 
            
                +0.20 / +1.63%
             |             
            
                12.60
             |           
            
                12.60
             |               
            
                12.30
             |                           
            
                12.50
             | 
            
                12.50
             |                     
            
                12.50
             |                                 
            
                2,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/10/2011
             | 
            
                -0.40 / -3.15%
             |             
            
                12.60
             |           
            
                12.60
             |               
            
                12.10
             |                           
            
                12.30
             | 
            
                12.30
             |                     
            
                12.30
             |                                 
            
                7,900
             |            
            
                 
             |                                       
         
    
        
            | 
                11/9/2011
             | 
            
                0.00 / 0.00%
             |             
            
                13.50
             |           
            
                13.50
             |               
            
                12.70
             |                           
            
                12.70
             | 
            
                12.70
             |                     
            
                12.70
             |                                 
            
                5,400
             |  
            
                 
             |                                                              
             
    
         
    
    
 |