| 
                 
                    Closing price on 3/30/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    50.00 | 
                 
                
                    | High | 
                    50.50 | 
                 
                
                    | Low | 
                    46.00 | 
                     
                
                    | Volume | 
                    109,600 | 
                                 
                
                    | Split-adjusted Price | 
                    21.32 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SDA Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                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
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/26/2010
             | 
            
                +0.80 / +1.78%
             |             
            
                46.00
             |           
            
                47.00
             |               
            
                44.10
             |                           
            
                45.80
             | 
            
                45.80
             |                     
            
                20.34
             |                                 
            
                108,100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/25/2010
             | 
            
                -3.00 / -6.25%
             |             
            
                47.50
             |           
            
                48.00
             |               
            
                44.80
             |                           
            
                45.00
             | 
            
                45.00
             |                     
            
                19.99
             |                                 
            
                174,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/24/2010
             | 
            
                +0.20 / +0.42%
             |             
            
                47.00
             |           
            
                48.50
             |               
            
                47.00
             |                           
            
                48.00
             | 
            
                48.00
             |                     
            
                21.32
             |                                 
            
                157,100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/23/2010
             | 
            
                -1.40 / -2.85%
             |             
            
                48.90
             |           
            
                48.90
             |               
            
                46.60
             |                           
            
                47.80
             | 
            
                47.80
             |                     
            
                21.23
             |                                 
            
                80,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/22/2010
             | 
            
                0.00 / 0.00%
             |             
            
                49.00
             |           
            
                50.40
             |               
            
                48.50
             |                           
            
                49.20
             | 
            
                49.20
             |                     
            
                21.85
             |                                 
            
                91,500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/19/2010
             | 
            
                -0.80 / -1.60%
             |             
            
                50.50
             |           
            
                51.50
             |               
            
                49.00
             |                           
            
                49.20
             | 
            
                49.20
             |                     
            
                21.85
             |                                 
            
                140,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/18/2010
             | 
            
                +0.90 / +1.83%
             |             
            
                50.00
             |           
            
                51.00
             |               
            
                48.50
             |                           
            
                50.00
             | 
            
                50.00
             |                     
            
                22.21
             |                                 
            
                131,700
             |            
            
                 
             |                                       
         
    
        
            | 
                3/17/2010
             | 
            
                -0.40 / -0.81%
             |             
            
                50.00
             |           
            
                52.00
             |               
            
                48.00
             |                           
            
                49.10
             | 
            
                49.10
             |                     
            
                21.81
             |                                 
            
                206,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/16/2010
             | 
            
                -3.00 / -5.71%
             |             
            
                51.00
             |           
            
                52.50
             |               
            
                49.50
             |                           
            
                49.50
             | 
            
                49.50
             |                     
            
                21.98
             |                                 
            
                271,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/15/2010
             | 
            
                -2.50 / -4.55%
             |             
            
                56.40
             |           
            
                56.80
             |               
            
                51.90
             |                           
            
                52.50
             | 
            
                52.50
             |                     
            
                23.32
             |                                 
            
                135,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/12/2010
             | 
            
                +1.40 / +2.61%
             |             
            
                53.00
             |           
            
                56.50
             |               
            
                53.00
             |                           
            
                55.00
             | 
            
                55.00
             |                     
            
                24.43
             |                                 
            
                177,200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/11/2010
             | 
            
                +2.40 / +4.69%
             |             
            
                51.20
             |           
            
                53.60
             |               
            
                50.30
             |                           
            
                53.60
             | 
            
                53.60
             |                     
            
                23.81
             |                                 
            
                291,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/10/2010
             | 
            
                +2.70 / +5.57%
             |             
            
                48.90
             |           
            
                52.10
             |               
            
                47.50
             |                           
            
                51.20
             | 
            
                51.20
             |                     
            
                22.74
             |                                 
            
                421,900
             |            
            
                 
             |                                       
         
    
        
            | 
                3/9/2010
             | 
            
                -1.00 / -2.02%
             |             
            
                49.00
             |           
            
                49.90
             |               
            
                47.50
             |                           
            
                48.50
             | 
            
                48.50
             |                     
            
                21.54
             |                                 
            
                217,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/8/2010
             | 
            
                +0.50 / +1.02%
             |             
            
                49.50
             |           
            
                51.00
             |               
            
                49.00
             |                           
            
                49.50
             | 
            
                49.50
             |                     
            
                21.98
             |                                 
            
                146,100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/5/2010
             | 
            
                +1.60 / +3.38%
             |             
            
                48.00
             |           
            
                49.20
             |               
            
                46.10
             |                           
            
                49.00
             | 
            
                49.00
             |                     
            
                21.76
             |                                 
            
                239,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/4/2010
             | 
            
                +1.40 / +3.04%
             |             
            
                47.00
             |           
            
                48.50
             |               
            
                46.10
             |                           
            
                47.40
             | 
            
                47.40
             |                     
            
                21.05
             |                                 
            
                193,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/3/2010
             | 
            
                +2.90 / +6.73%
             |             
            
                44.00
             |           
            
                46.00
             |               
            
                44.00
             |                           
            
                46.00
             | 
            
                46.00
             |                     
            
                20.43
             |                                 
            
                133,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/2/2010
             | 
            
                +2.00 / +4.87%
             |             
            
                43.10
             |           
            
                43.10
             |               
            
                42.00
             |                           
            
                43.10
             | 
            
                43.10
             |                     
            
                19.14
             |                                 
            
                286,900
             |            
            
                 
             |                                       
         
    
        
            | 
                3/1/2010
             | 
            
                +2.60 / +6.75%
             |             
            
                39.00
             |           
            
                41.10
             |               
            
                39.00
             |                           
            
                41.10
             | 
            
                41.10
             |                     
            
                18.25
             |                                 
            
                168,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/26/2010
             | 
            
                +0.30 / +0.79%
             |             
            
                38.20
             |           
            
                39.00
             |               
            
                38.10
             |                           
            
                38.50
             | 
            
                38.50
             |                     
            
                17.10
             |                                 
            
                18,300
             |            
            
                 
             |                                       
         
    
        
            | 
                2/25/2010
             | 
            
                -0.20 / -0.52%
             |             
            
                38.30
             |           
            
                38.50
             |               
            
                38.20
             |                           
            
                38.20
             | 
            
                38.20
             |                     
            
                16.97
             |                                 
            
                5,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/24/2010
             | 
            
                -0.10 / -0.26%
             |             
            
                37.00
             |           
            
                38.40
             |               
            
                37.00
             |                           
            
                38.40
             | 
            
                38.40
             |                     
            
                17.05
             |                                 
            
                15,800
             |            
            
                 
             |                                       
         
    
        
            | 
                2/23/2010
             | 
            
                -1.10 / -2.78%
             |             
            
                38.30
             |           
            
                38.50
             |               
            
                37.20
             |                           
            
                38.50
             | 
            
                38.50
             |                     
            
                17.10
             |                                 
            
                42,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/22/2010
             | 
            
                -0.60 / -1.49%
             |             
            
                40.00
             |           
            
                41.80
             |               
            
                39.50
             |                           
            
                39.60
             | 
            
                39.60
             |                     
            
                17.59
             |                                 
            
                17,500
             |            
            
                 
             |                                       
         
    
        
            | 
                2/12/2010
             | 
            
                +1.20 / +3.08%
             |             
            
                40.50
             |           
            
                40.50
             |               
            
                39.00
             |                           
            
                40.20
             | 
            
                40.20
             |                     
            
                17.85
             |                                 
            
                9,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/11/2010
             | 
            
                +1.00 / +2.63%
             |             
            
                38.50
             |           
            
                39.50
             |               
            
                38.50
             |                           
            
                39.00
             | 
            
                39.00
             |                     
            
                17.32
             |                                 
            
                14,600
             |            
            
                 
             |                                       
         
    
        
            | 
                2/10/2010
             | 
            
                +0.50 / +1.33%
             |             
            
                38.00
             |           
            
                38.50
             |               
            
                37.80
             |                           
            
                38.00
             | 
            
                38.00
             |                     
            
                16.88
             |                                 
            
                24,500
             |  
            
                 
             |                                                              
             
    
         
    
    
 |