| 
                 
                    Closing price on 2/22/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    24.00 | 
                 
                
                    | High | 
                    25.00 | 
                 
                
                    | Low | 
                    23.70 | 
                     
                
                    | Volume | 
                    67,900 | 
                                 
                
                    | Split-adjusted Price | 
                    24.10 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SDD Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                2/22/2010
             | 
            
                +1.00 / +4.33%
             |             
            
                24.00
             |           
            
                25.00
             |               
            
                23.70
             |                           
            
                24.10
             | 
            
                24.24
             |                     
            
                24.10
             |                                 
            
                67,900
             |            
            
                 
             |                                       
         
    
        
            | 
                2/12/2010
             | 
            
                +0.10 / +0.43%
             |             
            
                23.70
             |           
            
                23.80
             |               
            
                23.00
             |                           
            
                23.10
             | 
            
                23.60
             |                     
            
                23.10
             |                                 
            
                15,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/11/2010
             | 
            
                +0.30 / +1.32%
             |             
            
                22.00
             |           
            
                23.00
             |               
            
                22.00
             |                           
            
                23.00
             | 
            
                22.61
             |                     
            
                23.00
             |                                 
            
                51,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/10/2010
             | 
            
                +0.90 / +4.13%
             |             
            
                23.00
             |           
            
                23.00
             |               
            
                22.50
             |                           
            
                22.70
             | 
            
                22.64
             |                     
            
                22.70
             |                                 
            
                26,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/9/2010
             | 
            
                -0.40 / -1.80%
             |             
            
                22.70
             |           
            
                22.70
             |               
            
                21.70
             |                           
            
                21.80
             | 
            
                21.94
             |                     
            
                21.80
             |                                 
            
                33,600
             |            
            
                 
             |                                       
         
    
        
            | 
                2/8/2010
             | 
            
                -0.80 / -3.48%
             |             
            
                22.00
             |           
            
                23.00
             |               
            
                22.00
             |                           
            
                22.20
             | 
            
                22.41
             |                     
            
                22.20
             |                                 
            
                19,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/5/2010
             | 
            
                -0.40 / -1.71%
             |             
            
                23.00
             |           
            
                24.00
             |               
            
                22.50
             |                           
            
                23.00
             | 
            
                23.16
             |                     
            
                23.00
             |                                 
            
                41,900
             |            
            
                 
             |                                       
         
    
        
            | 
                2/4/2010
             | 
            
                +0.10 / +0.43%
             |             
            
                23.80
             |           
            
                23.80
             |               
            
                23.00
             |                           
            
                23.40
             | 
            
                23.46
             |                     
            
                23.40
             |                                 
            
                84,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/3/2010
             | 
            
                +0.30 / +1.30%
             |             
            
                23.40
             |           
            
                23.50
             |               
            
                22.80
             |                           
            
                23.30
             | 
            
                23.12
             |                     
            
                23.30
             |                                 
            
                46,600
             |            
            
                 
             |                                       
         
    
        
            | 
                2/2/2010
             | 
            
                -0.50 / -2.13%
             |             
            
                24.50
             |           
            
                24.50
             |               
            
                23.00
             |                           
            
                23.00
             | 
            
                23.61
             |                     
            
                23.00
             |                                 
            
                29,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/1/2010
             | 
            
                0.00 / 0.00%
             |             
            
                24.20
             |           
            
                24.20
             |               
            
                23.00
             |                           
            
                23.50
             | 
            
                23.39
             |                     
            
                23.50
             |                                 
            
                77,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/29/2010
             | 
            
                +0.50 / +2.17%
             |             
            
                22.90
             |           
            
                23.80
             |               
            
                22.50
             |                           
            
                23.50
             | 
            
                23.21
             |                     
            
                23.50
             |                                 
            
                60,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/28/2010
             | 
            
                -1.00 / -4.17%
             |             
            
                24.60
             |           
            
                24.60
             |               
            
                22.90
             |                           
            
                23.00
             | 
            
                23.09
             |                     
            
                23.00
             |                                 
            
                108,900
             |            
            
                 
             |                                       
         
    
        
            | 
                1/27/2010
             | 
            
                -0.80 / -3.23%
             |             
            
                26.40
             |           
            
                26.40
             |               
            
                23.00
             |                           
            
                24.00
             | 
            
                24.58
             |                     
            
                24.00
             |                                 
            
                79,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/26/2010
             | 
            
                +1.30 / +5.53%
             |             
            
                24.40
             |           
            
                24.80
             |               
            
                24.40
             |                           
            
                24.80
             | 
            
                24.73
             |                     
            
                24.80
             |                                 
            
                43,600
             |            
            
                 
             |                                       
         
    
        
            | 
                1/25/2010
             | 
            
                +0.60 / +2.62%
             |             
            
                23.00
             |           
            
                23.50
             |               
            
                22.50
             |                           
            
                23.50
             | 
            
                23.15
             |                     
            
                23.50
             |                                 
            
                85,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/22/2010
             | 
            
                +0.10 / +0.44%
             |             
            
                21.50
             |           
            
                23.30
             |               
            
                21.40
             |                           
            
                22.90
             | 
            
                22.03
             |                     
            
                22.90
             |                                 
            
                118,100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/21/2010
             | 
            
                -1.20 / -5.00%
             |             
            
                24.20
             |           
            
                24.20
             |               
            
                22.80
             |                           
            
                22.80
             | 
            
                22.88
             |                     
            
                22.80
             |                                 
            
                138,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/20/2010
             | 
            
                -1.50 / -5.88%
             |             
            
                26.00
             |           
            
                26.20
             |               
            
                23.50
             |                           
            
                24.00
             | 
            
                24.52
             |                     
            
                24.00
             |                                 
            
                91,100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/19/2010
             | 
            
                +0.80 / +3.24%
             |             
            
                24.00
             |           
            
                26.00
             |               
            
                24.00
             |                           
            
                25.50
             | 
            
                25.14
             |                     
            
                25.50
             |                                 
            
                64,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/18/2010
             | 
            
                -1.30 / -5.00%
             |             
            
                25.00
             |           
            
                25.00
             |               
            
                24.70
             |                           
            
                24.70
             | 
            
                24.78
             |                     
            
                24.70
             |                                 
            
                129,100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/15/2010
             | 
            
                -0.90 / -3.35%
             |             
            
                27.00
             |           
            
                27.50
             |               
            
                25.60
             |                           
            
                26.00
             | 
            
                26.51
             |                     
            
                26.00
             |                                 
            
                81,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/14/2010
             | 
            
                +0.40 / +1.51%
             |             
            
                26.80
             |           
            
                26.90
             |               
            
                26.50
             |                           
            
                26.90
             | 
            
                26.88
             |                     
            
                26.90
             |                                 
            
                136,000
             |            
            
                 
             |                                       
         
    
        
            | 
                1/13/2010
             | 
            
                +1.30 / +5.16%
             |             
            
                24.50
             |           
            
                27.30
             |               
            
                24.00
             |                           
            
                26.50
             | 
            
                25.17
             |                     
            
                26.50
             |                                 
            
                221,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/12/2010
             | 
            
                -1.70 / -6.32%
             |             
            
                27.00
             |           
            
                27.50
             |               
            
                25.20
             |                           
            
                25.20
             | 
            
                25.71
             |                     
            
                25.20
             |                                 
            
                76,400
             |            
            
                 
             |                                       
         
    
        
            | 
                1/11/2010
             | 
            
                -1.00 / -3.58%
             |             
            
                29.00
             |           
            
                29.00
             |               
            
                26.30
             |                           
            
                26.90
             | 
            
                27.01
             |                     
            
                26.90
             |                                 
            
                108,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/8/2010
             | 
            
                +1.00 / +3.72%
             |             
            
                26.00
             |           
            
                29.20
             |               
            
                26.00
             |                           
            
                27.90
             | 
            
                28.07
             |                     
            
                27.90
             |                                 
            
                286,900
             |            
            
                 
             |                                       
         
    
        
            | 
                1/7/2010
             | 
            
                -1.40 / -4.95%
             |             
            
                26.90
             |           
            
                28.00
             |               
            
                26.90
             |                           
            
                26.90
             | 
            
                27.29
             |                     
            
                26.90
             |                                 
            
                376,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/6/2010
             | 
            
                -0.90 / -3.08%
             |             
            
                28.50
             |           
            
                30.00
             |               
            
                28.30
             |                           
            
                28.30
             | 
            
                28.87
             |                     
            
                28.30
             |                                 
            
                327,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/5/2010
             | 
            
                +0.60 / +2.10%
             |             
            
                30.60
             |           
            
                30.60
             |               
            
                29.00
             |                           
            
                29.20
             | 
            
                30.35
             |                     
            
                29.20
             |                                 
            
                277,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |