| 
                 
                    Closing price on 4/20/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    28.60 | 
                 
                
                    | High | 
                    29.00 | 
                 
                
                    | Low | 
                    28.60 | 
                     
                
                    | Volume | 
                    2,600 | 
                                 
                
                    | Split-adjusted Price | 
                    7.58 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SDC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                4/20/2010
             | 
            
                +1.00 / +3.57%
             |             
            
                28.60
             |           
            
                29.00
             |               
            
                28.60
             |                           
            
                29.00
             | 
            
                29.00
             |                     
            
                7.58
             |                                 
            
                2,600
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2010
             | 
            
                -0.30 / -1.06%
             |             
            
                29.00
             |           
            
                29.00
             |               
            
                28.00
             |                           
            
                28.00
             | 
            
                28.00
             |                     
            
                7.32
             |                                 
            
                8,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/16/2010
             | 
            
                -1.50 / -5.03%
             |             
            
                30.50
             |           
            
                30.50
             |               
            
                28.20
             |                           
            
                28.30
             | 
            
                28.30
             |                     
            
                7.40
             |                                 
            
                2,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/15/2010
             | 
            
                +0.80 / +2.76%
             |             
            
                30.30
             |           
            
                30.30
             |               
            
                29.80
             |                           
            
                29.80
             | 
            
                29.80
             |                     
            
                7.79
             |                                 
            
                600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/14/2010
             | 
            
                +1.50 / +5.45%
             |             
            
                29.00
             |           
            
                29.00
             |               
            
                29.00
             |                           
            
                29.00
             | 
            
                29.00
             |                     
            
                7.58
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/13/2010
             | 
            
                -1.50 / -5.17%
             |             
            
                27.60
             |           
            
                27.60
             |               
            
                27.50
             |                           
            
                27.50
             | 
            
                27.50
             |                     
            
                7.19
             |                                 
            
                1,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/12/2010
             | 
            
                -1.60 / -5.23%
             |             
            
                29.00
             |           
            
                29.00
             |               
            
                29.00
             |                           
            
                29.00
             | 
            
                29.00
             |                     
            
                7.58
             |                                 
            
                1,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/9/2010
             | 
            
                +1.70 / +5.88%
             |             
            
                28.90
             |           
            
                30.60
             |               
            
                28.90
             |                           
            
                30.60
             | 
            
                30.60
             |                     
            
                8.00
             |                                 
            
                9,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/8/2010
             | 
            
                +1.70 / +6.25%
             |             
            
                28.80
             |           
            
                28.90
             |               
            
                28.50
             |                           
            
                28.90
             | 
            
                28.90
             |                     
            
                7.56
             |                                 
            
                8,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/7/2010
             | 
            
                +0.10 / +0.37%
             |             
            
                27.00
             |           
            
                27.20
             |               
            
                27.00
             |                           
            
                27.20
             | 
            
                27.20
             |                     
            
                7.11
             |                                 
            
                4,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/6/2010
             | 
            
                -1.20 / -4.24%
             |             
            
                27.10
             |           
            
                27.10
             |               
            
                27.00
             |                           
            
                27.10
             | 
            
                27.10
             |                     
            
                7.09
             |                                 
            
                1,700
             |            
            
                 
             |                                       
         
    
        
            | 
                4/5/2010
             | 
            
                +0.50 / +1.80%
             |             
            
                28.20
             |           
            
                28.30
             |               
            
                28.20
             |                           
            
                28.30
             | 
            
                28.30
             |                     
            
                7.40
             |                                 
            
                1,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/2/2010
             | 
            
                -0.40 / -1.42%
             |             
            
                27.80
             |           
            
                27.80
             |               
            
                27.80
             |                           
            
                27.80
             | 
            
                27.80
             |                     
            
                7.27
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                4/1/2010
             | 
            
                +1.40 / +5.22%
             |             
            
                26.50
             |           
            
                28.20
             |               
            
                26.50
             |                           
            
                28.20
             | 
            
                28.20
             |                     
            
                7.37
             |                                 
            
                3,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/31/2010
             | 
            
                -0.20 / -0.74%
             |             
            
                26.60
             |           
            
                27.00
             |               
            
                26.10
             |                           
            
                26.80
             | 
            
                26.80
             |                     
            
                7.01
             |                                 
            
                6,500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/30/2010
             | 
            
                -0.20 / -0.74%
             |             
            
                27.10
             |           
            
                27.10
             |               
            
                26.20
             |                           
            
                27.00
             | 
            
                27.00
             |                     
            
                7.06
             |                                 
            
                2,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/29/2010
             | 
            
                -0.10 / -0.37%
             |             
            
                27.00
             |           
            
                27.20
             |               
            
                27.00
             |                           
            
                27.20
             | 
            
                27.20
             |                     
            
                7.11
             |                                 
            
                300
             |            
            
                 
             |                                       
         
    
        
            | 
                3/26/2010
             | 
            
                +0.30 / +1.11%
             |             
            
                27.30
             |           
            
                27.30
             |               
            
                27.30
             |                           
            
                27.30
             | 
            
                27.30
             |                     
            
                7.14
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/25/2010
             | 
            
                -1.00 / -3.57%
             |             
            
                27.50
             |           
            
                27.50
             |               
            
                27.00
             |                           
            
                27.00
             | 
            
                27.00
             |                     
            
                7.06
             |                                 
            
                7,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/24/2010
             | 
            
                -1.90 / -6.35%
             |             
            
                28.40
             |           
            
                28.40
             |               
            
                28.00
             |                           
            
                28.00
             | 
            
                28.00
             |                     
            
                7.32
             |                                 
            
                7,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/23/2010
             | 
            
                -0.10 / -0.33%
             |             
            
                29.50
             |           
            
                29.90
             |               
            
                28.20
             |                           
            
                29.90
             | 
            
                29.90
             |                     
            
                7.82
             |                                 
            
                400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/22/2010
             | 
            
                0.00 / 0.00%
             |             
            
                30.00
             |           
            
                30.00
             |               
            
                30.00
             |                           
            
                30.00
             | 
            
                30.00
             |                     
            
                7.85
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/19/2010
             | 
            
                -0.30 / -0.99%
             |             
            
                30.00
             |           
            
                30.00
             |               
            
                30.00
             |                           
            
                30.00
             | 
            
                30.00
             |                     
            
                7.85
             |                                 
            
                400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/18/2010
             | 
            
                +2.30 / +8.21%
             |             
            
                29.90
             |           
            
                30.30
             |               
            
                29.90
             |                           
            
                30.30
             | 
            
                30.30
             |                     
            
                7.92
             |                                 
            
                3,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/17/2010
             | 
            
                -3.00 / -9.68%
             |             
            
                28.70
             |           
            
                28.70
             |               
            
                28.00
             |                           
            
                28.00
             | 
            
                28.00
             |                     
            
                7.32
             |                                 
            
                3,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/16/2010
             | 
            
                +0.90 / +2.99%
             |             
            
                28.00
             |           
            
                31.00
             |               
            
                28.00
             |                           
            
                31.00
             | 
            
                31.00
             |                     
            
                8.11
             |                                 
            
                6,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/15/2010
             | 
            
                +1.10 / +3.79%
             |             
            
                28.70
             |           
            
                30.10
             |               
            
                28.50
             |                           
            
                30.10
             | 
            
                30.10
             |                     
            
                7.87
             |                                 
            
                9,700
             |            
            
                 
             |                                       
         
    
        
            | 
                3/12/2010
             | 
            
                0.00 / 0.00%
             |             
            
                28.00
             |           
            
                29.00
             |               
            
                28.00
             |                           
            
                29.00
             | 
            
                29.00
             |                     
            
                7.58
             |                                 
            
                1,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/11/2010
             | 
            
                +0.10 / +0.35%
             |             
            
                29.00
             |           
            
                29.00
             |               
            
                29.00
             |                           
            
                29.00
             | 
            
                29.00
             |                     
            
                7.58
             |                                 
            
                400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/10/2010
             | 
            
                -0.30 / -1.03%
             |             
            
                28.20
             |           
            
                28.90
             |               
            
                28.10
             |                           
            
                28.90
             | 
            
                28.90
             |                     
            
                7.56
             |                                 
            
                3,700
             |  
            
                 
             |                                                              
             
    
         
    
    
 |