| 
                 
                    Closing price on 5/12/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    50.10 | 
                 
                
                    | High | 
                    53.00 | 
                 
                
                    | Low | 
                    48.90 | 
                     
                
                    | Volume | 
                    150,400 | 
                                 
                
                    | Split-adjusted Price | 
                    21.72 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SDA Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/12/2010
             | 
            
                -3.10 / -5.96%
             |             
            
                50.10
             |           
            
                53.00
             |               
            
                48.90
             |                           
            
                48.90
             | 
            
                48.90
             |                     
            
                21.72
             |                                 
            
                150,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/11/2010
             | 
            
                -2.00 / -3.70%
             |             
            
                55.90
             |           
            
                56.00
             |               
            
                51.40
             |                           
            
                52.00
             | 
            
                52.00
             |                     
            
                23.09
             |                                 
            
                184,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/10/2010
             | 
            
                -0.60 / -1.10%
             |             
            
                56.50
             |           
            
                57.00
             |               
            
                53.00
             |                           
            
                54.00
             | 
            
                54.00
             |                     
            
                23.98
             |                                 
            
                140,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/7/2010
             | 
            
                -2.60 / -4.55%
             |             
            
                57.00
             |           
            
                57.00
             |               
            
                54.50
             |                           
            
                54.60
             | 
            
                54.60
             |                     
            
                24.25
             |                                 
            
                159,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/6/2010
             | 
            
                +0.70 / +1.24%
             |             
            
                56.00
             |           
            
                58.00
             |               
            
                56.00
             |                           
            
                57.20
             | 
            
                57.20
             |                     
            
                25.40
             |                                 
            
                150,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/5/2010
             | 
            
                -0.30 / -0.53%
             |             
            
                55.90
             |           
            
                56.70
             |               
            
                55.00
             |                           
            
                56.50
             | 
            
                56.50
             |                     
            
                25.09
             |                                 
            
                132,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/4/2010
             | 
            
                -0.10 / -0.18%
             |             
            
                53.00
             |           
            
                58.30
             |               
            
                53.00
             |                           
            
                56.80
             | 
            
                56.80
             |                     
            
                25.23
             |                                 
            
                206,900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/29/2010
             | 
            
                +0.80 / +1.43%
             |             
            
                55.50
             |           
            
                58.00
             |               
            
                55.50
             |                           
            
                56.90
             | 
            
                56.90
             |                     
            
                25.27
             |                                 
            
                235,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/28/2010
             | 
            
                -0.70 / -1.23%
             |             
            
                57.90
             |           
            
                57.90
             |               
            
                56.10
             |                           
            
                56.10
             | 
            
                56.10
             |                     
            
                24.92
             |                                 
            
                177,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/27/2010
             | 
            
                +0.60 / +1.07%
             |             
            
                57.50
             |           
            
                58.00
             |               
            
                56.30
             |                           
            
                56.80
             | 
            
                56.80
             |                     
            
                25.23
             |                                 
            
                147,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/26/2010
             | 
            
                -1.90 / -3.27%
             |             
            
                58.00
             |           
            
                58.50
             |               
            
                56.00
             |                           
            
                56.20
             | 
            
                56.20
             |                     
            
                24.96
             |                                 
            
                152,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/22/2010
             | 
            
                -3.20 / -5.22%
             |             
            
                63.60
             |           
            
                64.40
             |               
            
                57.00
             |                           
            
                58.10
             | 
            
                58.10
             |                     
            
                25.80
             |                                 
            
                191,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/21/2010
             | 
            
                +4.10 / +7.17%
             |             
            
                58.00
             |           
            
                61.30
             |               
            
                57.50
             |                           
            
                61.30
             | 
            
                61.30
             |                     
            
                27.23
             |                                 
            
                506,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/20/2010
             | 
            
                +0.80 / +1.42%
             |             
            
                57.00
             |           
            
                58.50
             |               
            
                56.60
             |                           
            
                57.20
             | 
            
                57.20
             |                     
            
                25.40
             |                                 
            
                162,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/19/2010
             | 
            
                -0.20 / -0.35%
             |             
            
                56.60
             |           
            
                58.00
             |               
            
                55.00
             |                           
            
                56.40
             | 
            
                56.40
             |                     
            
                25.05
             |                                 
            
                226,400
             |            
            
                 
             |                                       
         
    
        
            | 
                4/16/2010
             | 
            
                -1.50 / -2.58%
             |             
            
                58.60
             |           
            
                59.00
             |               
            
                56.00
             |                           
            
                56.60
             | 
            
                56.60
             |                     
            
                25.14
             |                                 
            
                163,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/15/2010
             | 
            
                +3.60 / +6.61%
             |             
            
                54.90
             |           
            
                58.10
             |               
            
                54.70
             |                           
            
                58.10
             | 
            
                58.10
             |                     
            
                25.80
             |                                 
            
                349,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/14/2010
             | 
            
                +0.90 / +1.68%
             |             
            
                52.70
             |           
            
                55.60
             |               
            
                52.70
             |                           
            
                54.50
             | 
            
                54.50
             |                     
            
                24.20
             |                                 
            
                174,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/13/2010
             | 
            
                -2.00 / -3.60%
             |             
            
                56.50
             |           
            
                56.50
             |               
            
                53.00
             |                           
            
                53.60
             | 
            
                53.60
             |                     
            
                23.81
             |                                 
            
                139,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/12/2010
             | 
            
                -0.90 / -1.59%
             |             
            
                56.00
             |           
            
                58.00
             |               
            
                54.10
             |                           
            
                55.60
             | 
            
                55.60
             |                     
            
                24.69
             |                                 
            
                303,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/9/2010
             | 
            
                -3.00 / -5.04%
             |             
            
                55.00
             |           
            
                60.30
             |               
            
                55.00
             |                           
            
                56.50
             | 
            
                56.50
             |                     
            
                25.09
             |                                 
            
                197,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/8/2010
             | 
            
                +4.50 / +8.18%
             |             
            
                56.00
             |           
            
                59.50
             |               
            
                55.20
             |                           
            
                59.50
             | 
            
                59.50
             |                     
            
                26.43
             |                                 
            
                406,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/7/2010
             | 
            
                -0.40 / -0.72%
             |             
            
                55.90
             |           
            
                56.90
             |               
            
                54.50
             |                           
            
                55.00
             | 
            
                55.00
             |                     
            
                24.43
             |                                 
            
                251,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/6/2010
             | 
            
                +2.70 / +5.12%
             |             
            
                56.20
             |           
            
                56.20
             |               
            
                55.00
             |                           
            
                55.40
             | 
            
                55.40
             |                     
            
                24.60
             |                                 
            
                660,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/5/2010
             | 
            
                +3.20 / +6.46%
             |             
            
                51.50
             |           
            
                52.70
             |               
            
                51.50
             |                           
            
                52.70
             | 
            
                52.70
             |                     
            
                23.41
             |                                 
            
                124,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/2/2010
             | 
            
                +1.50 / +3.13%
             |             
            
                48.00
             |           
            
                50.00
             |               
            
                48.00
             |                           
            
                49.50
             | 
            
                49.50
             |                     
            
                21.98
             |                                 
            
                276,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/1/2010
             | 
            
                +1.00 / +2.13%
             |             
            
                47.80
             |           
            
                48.50
             |               
            
                46.00
             |                           
            
                48.00
             | 
            
                48.00
             |                     
            
                21.32
             |                                 
            
                128,100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/31/2010
             | 
            
                -1.00 / -2.08%
             |             
            
                48.50
             |           
            
                48.50
             |               
            
                46.60
             |                           
            
                47.00
             | 
            
                47.00
             |                     
            
                20.87
             |                                 
            
                83,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/30/2010
             | 
            
                -0.60 / -1.23%
             |             
            
                50.00
             |           
            
                50.50
             |               
            
                46.00
             |                           
            
                48.00
             | 
            
                48.00
             |                     
            
                21.32
             |                                 
            
                109,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/29/2010
             | 
            
                +2.80 / +6.11%
             |             
            
                46.00
             |           
            
                48.60
             |               
            
                46.00
             |                           
            
                48.60
             | 
            
                48.60
             |                     
            
                21.58
             |                                 
            
                275,200
             |  
            
                 
             |                                                              
             
    
         
    
    
 |