| 
                 
                    Closing price on 6/30/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    15.10 | 
                 
                
                    | High | 
                    15.10 | 
                 
                
                    | Low | 
                    14.70 | 
                     
                
                    | Volume | 
                    8,500 | 
                                 
                
                    | Split-adjusted Price | 
                    14.90 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SD7 Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/30/2011
             | 
            
                -0.40 / -2.61%
             |             
            
                15.10
             |           
            
                15.10
             |               
            
                14.70
             |                           
            
                14.90
             | 
            
                14.90
             |                     
            
                14.90
             |                                 
            
                8,500
             |            
            
                 
             |                                       
         
    
        
            | 
                6/29/2011
             | 
            
                0.00 / 0.00%
             |             
            
                15.10
             |           
            
                15.40
             |               
            
                14.90
             |                           
            
                15.30
             | 
            
                15.30
             |                     
            
                15.30
             |                                 
            
                31,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/28/2011
             | 
            
                -0.40 / -2.55%
             |             
            
                15.80
             |           
            
                15.80
             |               
            
                15.20
             |                           
            
                15.30
             | 
            
                15.30
             |                     
            
                15.30
             |                                 
            
                25,500
             |            
            
                 
             |                                       
         
    
        
            | 
                6/27/2011
             | 
            
                -0.10 / -0.63%
             |             
            
                16.10
             |           
            
                16.10
             |               
            
                15.60
             |                           
            
                15.70
             | 
            
                15.70
             |                     
            
                15.70
             |                                 
            
                36,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/24/2011
             | 
            
                +0.20 / +1.28%
             |             
            
                15.90
             |           
            
                16.00
             |               
            
                15.60
             |                           
            
                15.80
             | 
            
                15.80
             |                     
            
                15.80
             |                                 
            
                39,300
             |            
            
                 
             |                                       
         
    
        
            | 
                6/23/2011
             | 
            
                -0.20 / -1.27%
             |             
            
                16.00
             |           
            
                16.00
             |               
            
                15.50
             |                           
            
                15.60
             | 
            
                15.60
             |                     
            
                15.60
             |                                 
            
                42,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/22/2011
             | 
            
                0.00 / 0.00%
             |             
            
                15.50
             |           
            
                16.30
             |               
            
                15.30
             |                           
            
                15.80
             | 
            
                15.80
             |                     
            
                15.80
             |                                 
            
                45,600
             |            
            
                 
             |                                       
         
    
        
            | 
                6/21/2011
             | 
            
                +1.10 / +7.48%
             |             
            
                14.90
             |           
            
                15.80
             |               
            
                14.80
             |                           
            
                15.80
             | 
            
                15.80
             |                     
            
                15.80
             |                                 
            
                53,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/20/2011
             | 
            
                -0.50 / -3.29%
             |             
            
                15.50
             |           
            
                15.60
             |               
            
                14.50
             |                           
            
                14.70
             | 
            
                14.70
             |                     
            
                14.70
             |                                 
            
                41,400
             |            
            
                 
             |                                       
         
    
        
            | 
                6/17/2011
             | 
            
                -1.30 / -7.88%
             |             
            
                15.80
             |           
            
                15.80
             |               
            
                15.10
             |                           
            
                15.20
             | 
            
                15.20
             |                     
            
                15.20
             |                                 
            
                80,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/16/2011
             | 
            
                -0.10 / -0.60%
             |             
            
                16.70
             |           
            
                16.70
             |               
            
                15.80
             |                           
            
                16.50
             | 
            
                16.50
             |                     
            
                16.50
             |                                 
            
                51,800
             |            
            
                 
             |                                       
         
    
        
            | 
                6/15/2011
             | 
            
                -0.60 / -3.49%
             |             
            
                16.80
             |           
            
                16.90
             |               
            
                16.60
             |                           
            
                16.60
             | 
            
                16.60
             |                     
            
                16.60
             |                                 
            
                161,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/14/2011
             | 
            
                -0.60 / -3.37%
             |             
            
                17.60
             |           
            
                18.60
             |               
            
                17.00
             |                           
            
                17.20
             | 
            
                17.20
             |                     
            
                17.20
             |                                 
            
                96,800
             |            
            
                 
             |                                       
         
    
        
            | 
                6/13/2011
             | 
            
                +1.10 / +6.59%
             |             
            
                17.80
             |           
            
                17.80
             |               
            
                16.90
             |                           
            
                17.80
             | 
            
                17.80
             |                     
            
                17.80
             |                                 
            
                110,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/10/2011
             | 
            
                +0.40 / +2.45%
             |             
            
                16.50
             |           
            
                16.70
             |               
            
                16.50
             |                           
            
                16.70
             | 
            
                16.70
             |                     
            
                16.70
             |                                 
            
                37,400
             |            
            
                 
             |                                       
         
    
        
            | 
                6/9/2011
             | 
            
                +0.90 / +5.84%
             |             
            
                15.00
             |           
            
                16.30
             |               
            
                15.00
             |                           
            
                16.30
             | 
            
                16.30
             |                     
            
                16.30
             |                                 
            
                187,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/8/2011
             | 
            
                0.00 / 0.00%
             |             
            
                16.20
             |           
            
                16.20
             |               
            
                15.00
             |                           
            
                15.40
             | 
            
                15.40
             |                     
            
                15.40
             |                                 
            
                83,100
             |            
            
                 
             |                                       
         
    
        
            | 
                6/7/2011
             | 
            
                +0.70 / +4.76%
             |             
            
                14.90
             |           
            
                15.40
             |               
            
                14.90
             |                           
            
                15.40
             | 
            
                15.40
             |                     
            
                15.40
             |                                 
            
                29,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/6/2011
             | 
            
                -0.20 / -1.34%
             |             
            
                14.20
             |           
            
                15.00
             |               
            
                14.20
             |                           
            
                14.70
             | 
            
                14.70
             |                     
            
                14.70
             |                                 
            
                149,300
             |            
            
                 
             |                                       
         
    
        
            | 
                6/3/2011
             | 
            
                +0.60 / +4.20%
             |             
            
                15.20
             |           
            
                15.30
             |               
            
                14.40
             |                           
            
                14.90
             | 
            
                14.90
             |                     
            
                14.90
             |                                 
            
                194,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/2/2011
             | 
            
                +0.80 / +5.93%
             |             
            
                14.10
             |           
            
                14.30
             |               
            
                14.10
             |                           
            
                14.30
             | 
            
                14.30
             |                     
            
                14.30
             |                                 
            
                18,400
             |            
            
                 
             |                                       
         
    
        
            | 
                6/1/2011
             | 
            
                +0.60 / +4.65%
             |             
            
                12.50
             |           
            
                13.50
             |               
            
                12.50
             |                           
            
                13.50
             | 
            
                13.50
             |                     
            
                13.50
             |                                 
            
                56,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/31/2011
             | 
            
                -0.10 / -0.77%
             |             
            
                12.60
             |           
            
                13.30
             |               
            
                12.60
             |                           
            
                12.90
             | 
            
                12.90
             |                     
            
                12.90
             |                                 
            
                16,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/30/2011
             | 
            
                -0.20 / -1.52%
             |             
            
                13.60
             |           
            
                13.80
             |               
            
                12.80
             |                           
            
                13.00
             | 
            
                13.00
             |                     
            
                13.00
             |                                 
            
                54,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/27/2011
             | 
            
                0.00 / 0.00%
             |             
            
                13.20
             |           
            
                13.20
             |               
            
                13.20
             |                           
            
                13.20
             | 
            
                13.20
             |                     
            
                13.20
             |                                 
            
                36,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/26/2011
             | 
            
                +0.40 / +3.13%
             |             
            
                12.80
             |           
            
                13.50
             |               
            
                12.00
             |                           
            
                13.20
             | 
            
                13.20
             |                     
            
                13.20
             |                                 
            
                85,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/25/2011
             | 
            
                -0.80 / -5.88%
             |             
            
                12.90
             |           
            
                13.00
             |               
            
                12.80
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                12.80
             |                                 
            
                71,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/24/2011
             | 
            
                -1.00 / -6.85%
             |             
            
                13.90
             |           
            
                14.10
             |               
            
                13.60
             |                           
            
                13.60
             | 
            
                13.60
             |                     
            
                13.60
             |                                 
            
                92,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/23/2011
             | 
            
                -0.80 / -5.19%
             |             
            
                14.50
             |           
            
                15.00
             |               
            
                14.50
             |                           
            
                14.60
             | 
            
                14.60
             |                     
            
                14.60
             |                                 
            
                109,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/20/2011
             | 
            
                -0.60 / -3.75%
             |             
            
                15.90
             |           
            
                15.90
             |               
            
                15.30
             |                           
            
                15.40
             | 
            
                15.40
             |                     
            
                15.40
             |                                 
            
                29,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |