| 
                 
                    Closing price on 12/10/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    34.00 | 
                 
                
                    | High | 
                    34.70 | 
                 
                
                    | Low | 
                    33.60 | 
                     
                
                    | Volume | 
                    178,800 | 
                                 
                
                    | Split-adjusted Price | 
                    34.70 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SD7 Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                12/10/2010
             | 
            
                +0.90 / +2.66%
             |             
            
                34.00
             |           
            
                34.70
             |               
            
                33.60
             |                           
            
                34.70
             | 
            
                34.70
             |                     
            
                34.70
             |                                 
            
                178,800
             |            
            
                 
             |                                       
         
    
        
            | 
                12/9/2010
             | 
            
                +0.40 / +1.20%
             |             
            
                32.20
             |           
            
                35.00
             |               
            
                31.60
             |                           
            
                33.80
             | 
            
                33.80
             |                     
            
                33.80
             |                                 
            
                202,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/8/2010
             | 
            
                -1.30 / -3.75%
             |             
            
                34.00
             |           
            
                35.70
             |               
            
                33.40
             |                           
            
                33.40
             | 
            
                33.40
             |                     
            
                33.40
             |                                 
            
                234,800
             |            
            
                 
             |                                       
         
    
        
            | 
                12/7/2010
             | 
            
                -2.30 / -6.22%
             |             
            
                35.80
             |           
            
                37.50
             |               
            
                34.50
             |                           
            
                34.70
             | 
            
                34.70
             |                     
            
                34.70
             |                                 
            
                195,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/6/2010
             | 
            
                +2.00 / +5.71%
             |             
            
                36.70
             |           
            
                37.40
             |               
            
                36.30
             |                           
            
                37.00
             | 
            
                37.00
             |                     
            
                37.00
             |                                 
            
                305,700
             |            
            
                 
             |                                       
         
    
        
            | 
                12/3/2010
             | 
            
                +1.20 / +3.55%
             |             
            
                34.90
             |           
            
                35.00
             |               
            
                34.70
             |                           
            
                35.00
             | 
            
                35.00
             |                     
            
                35.00
             |                                 
            
                205,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/2/2010
             | 
            
                +2.30 / +7.30%
             |             
            
                30.00
             |           
            
                33.80
             |               
            
                29.60
             |                           
            
                33.80
             | 
            
                33.80
             |                     
            
                33.80
             |                                 
            
                303,800
             |            
            
                 
             |                                       
         
    
        
            | 
                12/1/2010
             | 
            
                -1.00 / -3.08%
             |             
            
                31.20
             |           
            
                33.40
             |               
            
                30.60
             |                           
            
                31.50
             | 
            
                31.50
             |                     
            
                31.50
             |                                 
            
                101,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/30/2010
             | 
            
                +1.00 / +3.17%
             |             
            
                31.00
             |           
            
                32.50
             |               
            
                30.50
             |                           
            
                32.50
             | 
            
                32.50
             |                     
            
                32.50
             |                                 
            
                171,300
             |            
            
                 
             |                                       
         
    
        
            | 
                11/29/2010
             | 
            
                +1.90 / +6.42%
             |             
            
                29.70
             |           
            
                31.50
             |               
            
                28.70
             |                           
            
                31.50
             | 
            
                31.50
             |                     
            
                31.50
             |                                 
            
                167,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/26/2010
             | 
            
                +1.60 / +5.71%
             |             
            
                29.50
             |           
            
                29.60
             |               
            
                27.80
             |                           
            
                29.60
             | 
            
                29.60
             |                     
            
                29.60
             |                                 
            
                313,700
             |            
            
                 
             |                                       
         
    
        
            | 
                11/25/2010
             | 
            
                +1.70 / +6.46%
             |             
            
                26.20
             |           
            
                28.00
             |               
            
                26.20
             |                           
            
                28.00
             | 
            
                28.00
             |                     
            
                28.00
             |                                 
            
                164,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/24/2010
             | 
            
                +0.30 / +1.15%
             |             
            
                25.20
             |           
            
                26.60
             |               
            
                25.10
             |                           
            
                26.30
             | 
            
                26.30
             |                     
            
                26.30
             |                                 
            
                98,900
             |            
            
                 
             |                                       
         
    
        
            | 
                11/23/2010
             | 
            
                +0.50 / +1.96%
             |             
            
                25.00
             |           
            
                26.30
             |               
            
                25.00
             |                           
            
                26.00
             | 
            
                26.00
             |                     
            
                26.00
             |                                 
            
                91,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/22/2010
             | 
            
                +1.10 / +4.51%
             |             
            
                23.90
             |           
            
                25.50
             |               
            
                23.90
             |                           
            
                25.50
             | 
            
                25.50
             |                     
            
                25.50
             |                                 
            
                105,600
             |            
            
                 
             |                                       
         
    
        
            | 
                11/19/2010
             | 
            
                -1.80 / -6.87%
             |             
            
                26.20
             |           
            
                26.20
             |               
            
                24.20
             |                           
            
                24.40
             | 
            
                24.40
             |                     
            
                24.40
             |                                 
            
                104,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/18/2010
             | 
            
                +1.20 / +4.80%
             |             
            
                25.20
             |           
            
                26.30
             |               
            
                25.20
             |                           
            
                26.20
             | 
            
                26.20
             |                     
            
                26.20
             |                                 
            
                68,100
             |            
            
                 
             |                                       
         
    
        
            | 
                11/17/2010
             | 
            
                +0.20 / +0.81%
             |             
            
                25.00
             |           
            
                25.00
             |               
            
                24.20
             |                           
            
                25.00
             | 
            
                25.00
             |                     
            
                25.00
             |                                 
            
                35,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/16/2010
             | 
            
                +0.10 / +0.40%
             |             
            
                25.80
             |           
            
                25.80
             |               
            
                24.00
             |                           
            
                24.80
             | 
            
                24.80
             |                     
            
                24.80
             |                                 
            
                117,000
             |            
            
                 
             |                                       
         
    
        
            | 
                11/15/2010
             | 
            
                -2.10 / -7.84%
             |             
            
                27.00
             |           
            
                27.00
             |               
            
                24.70
             |                           
            
                24.70
             | 
            
                24.70
             |                     
            
                24.70
             |                                 
            
                247,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/12/2010
             | 
            
                -1.40 / -4.96%
             |             
            
                28.10
             |           
            
                28.10
             |               
            
                26.40
             |                           
            
                26.80
             | 
            
                26.80
             |                     
            
                26.80
             |                                 
            
                241,700
             |            
            
                 
             |                                       
         
    
        
            | 
                11/11/2010
             | 
            
                -1.60 / -5.37%
             |             
            
                28.50
             |           
            
                28.80
             |               
            
                28.10
             |                           
            
                28.20
             | 
            
                28.20
             |                     
            
                28.20
             |                                 
            
                59,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/10/2010
             | 
            
                +1.60 / +5.67%
             |             
            
                30.10
             |           
            
                30.10
             |               
            
                28.20
             |                           
            
                29.80
             | 
            
                29.80
             |                     
            
                29.80
             |                                 
            
                109,600
             |            
            
                 
             |                                       
         
    
        
            | 
                11/9/2010
             | 
            
                -1.20 / -4.08%
             |             
            
                29.50
             |           
            
                29.50
             |               
            
                28.20
             |                           
            
                28.20
             | 
            
                28.20
             |                     
            
                28.20
             |                                 
            
                88,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/8/2010
             | 
            
                -1.10 / -3.61%
             |             
            
                31.00
             |           
            
                31.00
             |               
            
                29.40
             |                           
            
                29.40
             | 
            
                29.40
             |                     
            
                29.40
             |                                 
            
                48,500
             |            
            
                 
             |                                       
         
    
        
            | 
                11/5/2010
             | 
            
                +0.30 / +0.99%
             |             
            
                31.00
             |           
            
                31.60
             |               
            
                30.10
             |                           
            
                30.50
             | 
            
                30.50
             |                     
            
                30.50
             |                                 
            
                140,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/4/2010
             | 
            
                +0.90 / +3.07%
             |             
            
                29.60
             |           
            
                30.40
             |               
            
                29.20
             |                           
            
                30.20
             | 
            
                30.20
             |                     
            
                30.20
             |                                 
            
                97,800
             |            
            
                 
             |                                       
         
    
        
            | 
                11/3/2010
             | 
            
                -0.20 / -0.68%
             |             
            
                30.90
             |           
            
                30.90
             |               
            
                29.30
             |                           
            
                29.30
             | 
            
                29.30
             |                     
            
                29.30
             |                                 
            
                70,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/2/2010
             | 
            
                -1.20 / -3.91%
             |             
            
                30.90
             |           
            
                30.90
             |               
            
                29.30
             |                           
            
                29.50
             | 
            
                29.50
             |                     
            
                29.50
             |                                 
            
                88,700
             |            
            
                 
             |                                       
         
    
        
            | 
                11/1/2010
             | 
            
                -0.60 / -1.92%
             |             
            
                31.30
             |           
            
                31.30
             |               
            
                30.60
             |                           
            
                30.70
             | 
            
                30.70
             |                     
            
                30.70
             |                                 
            
                21,100
             |  
            
                 
             |                                                              
             
    
         
    
    
 |