| 
                 
                    Closing price on 2/17/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    30.50 | 
                 
                
                    | High | 
                    30.50 | 
                 
                
                    | Low | 
                    29.70 | 
                     
                
                    | Volume | 
                    68,700 | 
                                 
                
                    | Split-adjusted Price | 
                    29.70 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SD7 Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                2/17/2011
             | 
            
                -1.30 / -4.19%
             |             
            
                30.50
             |           
            
                30.50
             |               
            
                29.70
             |                           
            
                29.70
             | 
            
                29.70
             |                     
            
                29.70
             |                                 
            
                68,700
             |            
            
                 
             |                                       
         
    
        
            | 
                2/16/2011
             | 
            
                -1.00 / -3.13%
             |             
            
                31.00
             |           
            
                32.00
             |               
            
                30.90
             |                           
            
                31.00
             | 
            
                31.00
             |                     
            
                31.00
             |                                 
            
                49,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/15/2011
             | 
            
                -0.60 / -1.84%
             |             
            
                32.80
             |           
            
                32.80
             |               
            
                31.60
             |                           
            
                32.00
             | 
            
                32.00
             |                     
            
                32.00
             |                                 
            
                57,400
             |            
            
                 
             |                                       
         
    
        
            | 
                2/14/2011
             | 
            
                -0.10 / -0.31%
             |             
            
                33.50
             |           
            
                33.50
             |               
            
                32.50
             |                           
            
                32.60
             | 
            
                32.60
             |                     
            
                32.60
             |                                 
            
                30,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/11/2011
             | 
            
                +0.20 / +0.62%
             |             
            
                32.50
             |           
            
                32.80
             |               
            
                32.50
             |                           
            
                32.70
             | 
            
                32.70
             |                     
            
                32.70
             |                                 
            
                10,100
             |            
            
                 
             |                                       
         
    
        
            | 
                2/10/2011
             | 
            
                -0.30 / -0.91%
             |             
            
                33.30
             |           
            
                33.30
             |               
            
                32.00
             |                           
            
                32.50
             | 
            
                32.50
             |                     
            
                32.50
             |                                 
            
                50,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/9/2011
             | 
            
                +0.20 / +0.61%
             |             
            
                34.00
             |           
            
                34.00
             |               
            
                32.80
             |                           
            
                32.80
             | 
            
                32.80
             |                     
            
                32.80
             |                                 
            
                17,200
             |            
            
                 
             |                                       
         
    
        
            | 
                2/8/2011
             | 
            
                -0.40 / -1.21%
             |             
            
                33.20
             |           
            
                33.20
             |               
            
                32.60
             |                           
            
                32.60
             | 
            
                32.60
             |                     
            
                32.60
             |                                 
            
                13,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/28/2011
             | 
            
                -0.90 / -2.65%
             |             
            
                33.10
             |           
            
                33.50
             |               
            
                33.00
             |                           
            
                33.00
             | 
            
                33.00
             |                     
            
                33.00
             |                                 
            
                27,400
             |            
            
                 
             |                                       
         
    
        
            | 
                1/27/2011
             | 
            
                +0.90 / +2.73%
             |             
            
                33.00
             |           
            
                33.90
             |               
            
                33.00
             |                           
            
                33.90
             | 
            
                33.90
             |                     
            
                33.90
             |                                 
            
                11,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/26/2011
             | 
            
                +0.50 / +1.54%
             |             
            
                32.90
             |           
            
                33.00
             |               
            
                32.70
             |                           
            
                33.00
             | 
            
                33.00
             |                     
            
                33.00
             |                                 
            
                27,300
             |            
            
                 
             |                                       
         
    
        
            | 
                1/25/2011
             | 
            
                +0.10 / +0.31%
             |             
            
                32.00
             |           
            
                32.90
             |               
            
                32.00
             |                           
            
                32.50
             | 
            
                32.50
             |                     
            
                32.50
             |                                 
            
                15,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/24/2011
             | 
            
                -1.00 / -2.99%
             |             
            
                33.60
             |           
            
                33.60
             |               
            
                32.20
             |                           
            
                32.40
             | 
            
                32.40
             |                     
            
                32.40
             |                                 
            
                43,700
             |            
            
                 
             |                                       
         
    
        
            | 
                1/21/2011
             | 
            
                +0.40 / +1.21%
             |             
            
                33.80
             |           
            
                33.90
             |               
            
                33.20
             |                           
            
                33.40
             | 
            
                33.40
             |                     
            
                33.40
             |                                 
            
                121,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/20/2011
             | 
            
                0.00 / 0.00%
             |             
            
                33.00
             |           
            
                34.00
             |               
            
                33.00
             |                           
            
                33.00
             | 
            
                33.00
             |                     
            
                33.00
             |                                 
            
                66,000
             |            
            
                 
             |                                       
         
    
        
            | 
                1/19/2011
             | 
            
                0.00 / 0.00%
             |             
            
                33.80
             |           
            
                33.80
             |               
            
                32.60
             |                           
            
                33.00
             | 
            
                33.00
             |                     
            
                33.00
             |                                 
            
                48,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/18/2011
             | 
            
                -0.70 / -2.08%
             |             
            
                33.00
             |           
            
                34.50
             |               
            
                33.00
             |                           
            
                33.00
             | 
            
                33.00
             |                     
            
                33.00
             |                                 
            
                45,900
             |            
            
                 
             |                                       
         
    
        
            | 
                1/17/2011
             | 
            
                +1.20 / +3.69%
             |             
            
                32.40
             |           
            
                34.60
             |               
            
                32.40
             |                           
            
                33.70
             | 
            
                33.70
             |                     
            
                33.70
             |                                 
            
                68,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/14/2011
             | 
            
                0.00 / 0.00%
             |             
            
                32.50
             |           
            
                32.70
             |               
            
                32.00
             |                           
            
                32.50
             | 
            
                32.50
             |                     
            
                32.50
             |                                 
            
                47,100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/13/2011
             | 
            
                0.00 / 0.00%
             |             
            
                32.50
             |           
            
                33.00
             |               
            
                32.10
             |                           
            
                32.50
             | 
            
                32.50
             |                     
            
                32.50
             |                                 
            
                21,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/12/2011
             | 
            
                +0.80 / +2.52%
             |             
            
                32.00
             |           
            
                32.80
             |               
            
                32.00
             |                           
            
                32.50
             | 
            
                32.50
             |                     
            
                32.50
             |                                 
            
                37,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/11/2011
             | 
            
                -0.60 / -1.86%
             |             
            
                32.20
             |           
            
                32.50
             |               
            
                31.60
             |                           
            
                31.70
             | 
            
                31.70
             |                     
            
                31.70
             |                                 
            
                53,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/10/2011
             | 
            
                -1.50 / -4.44%
             |             
            
                33.00
             |           
            
                33.30
             |               
            
                32.30
             |                           
            
                32.30
             | 
            
                32.30
             |                     
            
                32.30
             |                                 
            
                71,900
             |            
            
                 
             |                                       
         
    
        
            | 
                1/7/2011
             | 
            
                0.00 / 0.00%
             |             
            
                34.60
             |           
            
                34.60
             |               
            
                33.60
             |                           
            
                33.80
             | 
            
                33.80
             |                     
            
                33.80
             |                                 
            
                53,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/6/2011
             | 
            
                +0.20 / +0.60%
             |             
            
                33.50
             |           
            
                33.80
             |               
            
                33.40
             |                           
            
                33.80
             | 
            
                33.80
             |                     
            
                33.80
             |                                 
            
                21,100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/5/2011
             | 
            
                -0.60 / -1.75%
             |             
            
                34.10
             |           
            
                34.30
             |               
            
                33.60
             |                           
            
                33.60
             | 
            
                33.60
             |                     
            
                33.60
             |                                 
            
                62,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/4/2011
             | 
            
                +0.20 / +0.59%
             |             
            
                34.80
             |           
            
                34.80
             |               
            
                34.20
             |                           
            
                34.20
             | 
            
                34.20
             |                     
            
                34.20
             |                                 
            
                41,700
             |            
            
                 
             |                                       
         
    
        
            | 
                12/31/2010
             | 
            
                0.00 / 0.00%
             |             
            
                35.10
             |           
            
                35.50
             |               
            
                33.80
             |                           
            
                34.00
             | 
            
                34.00
             |                     
            
                34.00
             |                                 
            
                61,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/30/2010
             | 
            
                -0.50 / -1.45%
             |             
            
                34.50
             |           
            
                35.50
             |               
            
                33.50
             |                           
            
                34.00
             | 
            
                34.00
             |                     
            
                34.00
             |                                 
            
                37,200
             |            
            
                 
             |                                       
         
    
        
            | 
                12/29/2010
             | 
            
                -1.20 / -3.36%
             |             
            
                36.00
             |           
            
                36.00
             |               
            
                33.80
             |                           
            
                34.50
             | 
            
                34.50
             |                     
            
                34.50
             |                                 
            
                47,200
             |  
            
                 
             |                                                              
             
    
         
    
    
 |