| 
                 
                    Closing price on 9/15/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    23.90 | 
                 
                
                    | High | 
                    23.90 | 
                 
                
                    | Low | 
                    23.90 | 
                     
                
                    | Volume | 
                    100 | 
                                 
                
                    | Split-adjusted Price | 
                    6.62 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SDC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                9/15/2010
             | 
            
                +1.10 / +4.82%
             |             
            
                23.90
             |           
            
                23.90
             |               
            
                23.90
             |                           
            
                23.90
             | 
            
                23.90
             |                     
            
                6.62
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                9/14/2010
             | 
            
                -1.70 / -6.94%
             |             
            
                22.80
             |           
            
                22.80
             |               
            
                22.80
             |                           
            
                22.80
             | 
            
                22.80
             |                     
            
                6.31
             |                                 
            
                400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/13/2010
             | 
            
                0.00 / 0.00%
             |             
            
                24.50
             |           
            
                24.50
             |               
            
                24.50
             |                           
            
                24.50
             | 
            
                24.50
             |                     
            
                6.78
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                9/10/2010
             | 
            
                0.00 / 0.00%
             |             
            
                24.50
             |           
            
                24.50
             |               
            
                24.50
             |                           
            
                24.50
             | 
            
                24.50
             |                     
            
                6.78
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/9/2010
             | 
            
                +1.50 / +6.52%
             |             
            
                24.50
             |           
            
                24.50
             |               
            
                24.50
             |                           
            
                24.50
             | 
            
                24.50
             |                     
            
                6.78
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                9/8/2010
             | 
            
                -1.50 / -6.12%
             |             
            
                23.50
             |           
            
                23.50
             |               
            
                23.00
             |                           
            
                23.00
             | 
            
                23.00
             |                     
            
                6.37
             |                                 
            
                1,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/7/2010
             | 
            
                -1.50 / -5.77%
             |             
            
                24.80
             |           
            
                25.00
             |               
            
                24.50
             |                           
            
                24.50
             | 
            
                24.50
             |                     
            
                6.78
             |                                 
            
                2,000
             |            
            
                 
             |                                       
         
    
        
            | 
                9/6/2010
             | 
            
                +1.50 / +6.12%
             |             
            
                25.60
             |           
            
                26.00
             |               
            
                25.60
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                7.20
             |                                 
            
                600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/1/2010
             | 
            
                +1.00 / +4.26%
             |             
            
                24.90
             |           
            
                24.90
             |               
            
                24.50
             |                           
            
                24.50
             | 
            
                24.50
             |                     
            
                6.78
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/31/2010
             | 
            
                +1.20 / +5.38%
             |             
            
                23.50
             |           
            
                23.50
             |               
            
                23.50
             |                           
            
                23.50
             | 
            
                23.50
             |                     
            
                6.51
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/30/2010
             | 
            
                +1.40 / +6.70%
             |             
            
                22.30
             |           
            
                22.30
             |               
            
                22.30
             |                           
            
                22.30
             | 
            
                22.30
             |                     
            
                6.18
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                8/27/2010
             | 
            
                +1.20 / +6.09%
             |             
            
                20.80
             |           
            
                20.90
             |               
            
                20.80
             |                           
            
                20.90
             | 
            
                20.90
             |                     
            
                5.79
             |                                 
            
                4,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/26/2010
             | 
            
                -1.30 / -6.19%
             |             
            
                19.60
             |           
            
                19.70
             |               
            
                19.60
             |                           
            
                19.70
             | 
            
                19.70
             |                     
            
                5.46
             |                                 
            
                2,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/25/2010
             | 
            
                -1.10 / -4.98%
             |             
            
                21.00
             |           
            
                21.00
             |               
            
                21.00
             |                           
            
                21.00
             | 
            
                21.00
             |                     
            
                5.82
             |                                 
            
                800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/24/2010
             | 
            
                -1.50 / -6.36%
             |             
            
                23.00
             |           
            
                23.00
             |               
            
                22.10
             |                           
            
                22.10
             | 
            
                22.10
             |                     
            
                6.12
             |                                 
            
                1,200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/23/2010
             | 
            
                -1.70 / -6.72%
             |             
            
                25.00
             |           
            
                25.00
             |               
            
                23.60
             |                           
            
                23.60
             | 
            
                23.60
             |                     
            
                6.54
             |                                 
            
                2,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/20/2010
             | 
            
                0.00 / 0.00%
             |             
            
                25.30
             |           
            
                25.30
             |               
            
                25.30
             |                           
            
                25.30
             | 
            
                25.30
             |                     
            
                7.01
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                8/19/2010
             | 
            
                +1.20 / +4.98%
             |             
            
                25.30
             |           
            
                25.30
             |               
            
                25.30
             |                           
            
                25.30
             | 
            
                25.30
             |                     
            
                7.01
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/18/2010
             | 
            
                -0.90 / -3.60%
             |             
            
                24.10
             |           
            
                24.10
             |               
            
                23.50
             |                           
            
                24.10
             | 
            
                24.10
             |                     
            
                6.67
             |                                 
            
                1,200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/17/2010
             | 
            
                -1.10 / -4.21%
             |             
            
                25.00
             |           
            
                25.00
             |               
            
                25.00
             |                           
            
                25.00
             | 
            
                25.00
             |                     
            
                6.92
             |                                 
            
                1,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/16/2010
             | 
            
                +1.60 / +6.53%
             |             
            
                26.00
             |           
            
                26.10
             |               
            
                26.00
             |                           
            
                26.10
             | 
            
                26.10
             |                     
            
                7.23
             |                                 
            
                2,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/13/2010
             | 
            
                -0.60 / -2.39%
             |             
            
                24.40
             |           
            
                24.50
             |               
            
                24.40
             |                           
            
                24.50
             | 
            
                24.50
             |                     
            
                6.78
             |                                 
            
                6,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/12/2010
             | 
            
                -1.80 / -6.69%
             |             
            
                27.30
             |           
            
                27.30
             |               
            
                25.10
             |                           
            
                25.10
             | 
            
                25.10
             |                     
            
                6.95
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/11/2010
             | 
            
                -0.60 / -2.18%
             |             
            
                26.90
             |           
            
                26.90
             |               
            
                26.90
             |                           
            
                26.90
             | 
            
                26.90
             |                     
            
                7.45
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/10/2010
             | 
            
                0.00 / 0.00%
             |             
            
                27.50
             |           
            
                27.50
             |               
            
                27.50
             |                           
            
                27.50
             | 
            
                27.50
             |                     
            
                7.62
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                8/9/2010
             | 
            
                0.00 / 0.00%
             |             
            
                27.50
             |           
            
                27.50
             |               
            
                27.50
             |                           
            
                27.50
             | 
            
                27.50
             |                     
            
                7.62
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/6/2010
             | 
            
                0.00 / 0.00%
             |             
            
                27.50
             |           
            
                27.50
             |               
            
                27.50
             |                           
            
                27.50
             | 
            
                27.50
             |                     
            
                7.62
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                8/5/2010
             | 
            
                0.00 / 0.00%
             |             
            
                27.50
             |           
            
                27.50
             |               
            
                27.50
             |                           
            
                27.50
             | 
            
                27.50
             |                     
            
                7.62
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/4/2010
             | 
            
                0.00 / 0.00%
             |             
            
                27.50
             |           
            
                27.50
             |               
            
                27.50
             |                           
            
                27.50
             | 
            
                27.50
             |                     
            
                7.62
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                8/3/2010
             | 
            
                +1.50 / +5.77%
             |             
            
                27.50
             |           
            
                27.50
             |               
            
                27.50
             |                           
            
                27.50
             | 
            
                27.50
             |                     
            
                7.62
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
         
    
    
 |