| 
                 
                    Closing price on 10/3/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    7.80 | 
                 
                
                    | High | 
                    8.00 | 
                 
                
                    | Low | 
                    7.80 | 
                     
                
                    | Volume | 
                    3,100 | 
                                 
                
                    | Split-adjusted Price | 
                    7.90 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SD1 Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                10/3/2011
             | 
            
                -0.40 / -4.82%
             |             
            
                7.80
             |           
            
                8.00
             |               
            
                7.80
             |                           
            
                7.90
             | 
            
                7.90
             |                     
            
                7.90
             |                                 
            
                3,100
             |            
            
                 
             |                                       
         
    
        
            | 
                9/30/2011
             | 
            
                0.00 / 0.00%
             |             
            
                8.30
             |           
            
                8.30
             |               
            
                8.30
             |                           
            
                8.30
             | 
            
                8.30
             |                     
            
                8.30
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/29/2011
             | 
            
                0.00 / 0.00%
             |             
            
                8.30
             |           
            
                8.30
             |               
            
                8.30
             |                           
            
                8.30
             | 
            
                8.30
             |                     
            
                8.30
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                9/28/2011
             | 
            
                +0.70 / +9.21%
             |             
            
                8.30
             |           
            
                8.30
             |               
            
                8.30
             |                           
            
                8.30
             | 
            
                8.30
             |                     
            
                8.30
             |                                 
            
                9,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/27/2011
             | 
            
                -0.30 / -3.80%
             |             
            
                8.10
             |           
            
                8.10
             |               
            
                7.60
             |                           
            
                7.60
             | 
            
                7.60
             |                     
            
                7.60
             |                                 
            
                2,200
             |            
            
                 
             |                                       
         
    
        
            | 
                9/26/2011
             | 
            
                -0.10 / -1.25%
             |             
            
                7.60
             |           
            
                7.90
             |               
            
                7.50
             |                           
            
                7.90
             | 
            
                7.90
             |                     
            
                7.90
             |                                 
            
                11,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/23/2011
             | 
            
                -0.20 / -2.44%
             |             
            
                7.90
             |           
            
                8.00
             |               
            
                7.90
             |                           
            
                8.00
             | 
            
                7.95
             |                     
            
                8.00
             |                                 
            
                3,200
             |            
            
                 
             |                                       
         
    
        
            | 
                9/22/2011
             | 
            
                +0.20 / +2.50%
             |             
            
                8.20
             |           
            
                8.30
             |               
            
                8.20
             |                           
            
                8.20
             | 
            
                8.20
             |                     
            
                8.20
             |                                 
            
                3,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/21/2011
             | 
            
                +0.20 / +2.56%
             |             
            
                8.20
             |           
            
                8.20
             |               
            
                8.00
             |                           
            
                8.00
             | 
            
                8.00
             |                     
            
                8.00
             |                                 
            
                3,400
             |            
            
                 
             |                                       
         
    
        
            | 
                9/20/2011
             | 
            
                -0.40 / -4.88%
             |             
            
                8.30
             |           
            
                8.30
             |               
            
                7.80
             |                           
            
                7.80
             | 
            
                7.80
             |                     
            
                7.80
             |                                 
            
                4,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/19/2011
             | 
            
                +0.40 / +5.13%
             |             
            
                8.20
             |           
            
                8.20
             |               
            
                8.10
             |                           
            
                8.20
             | 
            
                8.20
             |                     
            
                8.20
             |                                 
            
                7,000
             |            
            
                 
             |                                       
         
    
        
            | 
                9/16/2011
             | 
            
                -0.30 / -3.70%
             |             
            
                8.20
             |           
            
                8.20
             |               
            
                7.70
             |                           
            
                7.80
             | 
            
                8.10
             |                     
            
                7.80
             |                                 
            
                9,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/15/2011
             | 
            
                -0.30 / -3.57%
             |             
            
                8.50
             |           
            
                8.50
             |               
            
                8.00
             |                           
            
                8.10
             | 
            
                8.10
             |                     
            
                8.10
             |                                 
            
                23,000
             |            
            
                 
             |                                       
         
    
        
            | 
                9/14/2011
             | 
            
                +0.30 / +3.70%
             |             
            
                8.60
             |           
            
                8.60
             |               
            
                8.40
             |                           
            
                8.40
             | 
            
                8.40
             |                     
            
                8.40
             |                                 
            
                17,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/13/2011
             | 
            
                +0.20 / +2.53%
             |             
            
                8.10
             |           
            
                8.10
             |               
            
                8.10
             |                           
            
                8.10
             | 
            
                8.10
             |                     
            
                8.10
             |                                 
            
                9,800
             |            
            
                 
             |                                       
         
    
        
            | 
                9/12/2011
             | 
            
                +0.30 / +3.95%
             |             
            
                7.40
             |           
            
                7.90
             |               
            
                7.40
             |                           
            
                7.90
             | 
            
                7.90
             |                     
            
                7.90
             |                                 
            
                14,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/9/2011
             | 
            
                +0.40 / +5.56%
             |             
            
                7.50
             |           
            
                7.60
             |               
            
                7.30
             |                           
            
                7.60
             | 
            
                7.50
             |                     
            
                7.60
             |                                 
            
                12,900
             |            
            
                 
             |                                       
         
    
        
            | 
                9/8/2011
             | 
            
                +0.10 / +1.41%
             |             
            
                7.40
             |           
            
                7.50
             |               
            
                7.00
             |                           
            
                7.20
             | 
            
                7.20
             |                     
            
                7.20
             |                                 
            
                10,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/7/2011
             | 
            
                +0.40 / +5.97%
             |             
            
                7.00
             |           
            
                7.10
             |               
            
                7.00
             |                           
            
                7.10
             | 
            
                7.10
             |                     
            
                7.10
             |                                 
            
                5,800
             |            
            
                 
             |                                       
         
    
        
            | 
                9/6/2011
             | 
            
                -0.40 / -5.63%
             |             
            
                6.70
             |           
            
                6.70
             |               
            
                6.70
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                6.70
             |                                 
            
                1,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/5/2011
             | 
            
                -0.10 / -1.39%
             |             
            
                7.10
             |           
            
                7.10
             |               
            
                7.10
             |                           
            
                7.10
             | 
            
                7.10
             |                     
            
                7.10
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                9/1/2011
             | 
            
                +0.30 / +4.35%
             |             
            
                6.80
             |           
            
                7.20
             |               
            
                6.70
             |                           
            
                7.20
             | 
            
                6.90
             |                     
            
                7.20
             |                                 
            
                5,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/31/2011
             | 
            
                0.00 / 0.00%
             |             
            
                6.90
             |           
            
                7.00
             |               
            
                6.90
             |                           
            
                6.90
             | 
            
                6.90
             |                     
            
                6.90
             |                                 
            
                4,900
             |            
            
                 
             |                                       
         
    
        
            | 
                8/30/2011
             | 
            
                +0.10 / +1.47%
             |             
            
                7.10
             |           
            
                7.10
             |               
            
                6.60
             |                           
            
                6.90
             | 
            
                6.90
             |                     
            
                6.90
             |                                 
            
                15,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/29/2011
             | 
            
                +0.10 / +1.49%
             |             
            
                6.70
             |           
            
                6.90
             |               
            
                6.70
             |                           
            
                6.80
             | 
            
                6.80
             |                     
            
                6.80
             |                                 
            
                5,700
             |            
            
                 
             |                                       
         
    
        
            | 
                8/26/2011
             | 
            
                0.00 / 0.00%
             |             
            
                6.30
             |           
            
                6.70
             |               
            
                6.30
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                6.70
             |                                 
            
                2,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/25/2011
             | 
            
                0.00 / 0.00%
             |             
            
                6.30
             |           
            
                6.70
             |               
            
                6.30
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                6.70
             |                                 
            
                300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/24/2011
             | 
            
                +0.10 / +1.52%
             |             
            
                6.70
             |           
            
                6.70
             |               
            
                6.70
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                6.70
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/23/2011
             | 
            
                -0.20 / -2.94%
             |             
            
                6.80
             |           
            
                6.80
             |               
            
                6.60
             |                           
            
                6.60
             | 
            
                6.60
             |                     
            
                6.60
             |                                 
            
                2,600
             |            
            
                 
             |                                       
         
    
        
            | 
                8/22/2011
             | 
            
                +0.40 / +6.25%
             |             
            
                6.80
             |           
            
                6.80
             |               
            
                6.80
             |                           
            
                6.80
             | 
            
                6.80
             |                     
            
                6.80
             |                                 
            
                1,100
             |  
            
                 
             |                                                              
             
    
         
    
    
 |