| 
                 
                    Closing price on 12/29/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    13.70 | 
                 
                
                    | High | 
                    13.70 | 
                 
                
                    | Low | 
                    12.70 | 
                     
                
                    | Volume | 
                    22,400 | 
                                 
                
                    | Split-adjusted Price | 
                    12.80 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SDD Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                12/29/2010
             | 
            
                -0.60 / -4.48%
             |             
            
                13.70
             |           
            
                13.70
             |               
            
                12.70
             |                           
            
                12.80
             | 
            
                13.16
             |                     
            
                12.80
             |                                 
            
                22,400
             |            
            
                 
             |                                       
         
    
        
            | 
                12/28/2010
             | 
            
                +0.40 / +3.08%
             |             
            
                13.20
             |           
            
                13.60
             |               
            
                12.80
             |                           
            
                13.40
             | 
            
                13.27
             |                     
            
                13.40
             |                                 
            
                92,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/27/2010
             | 
            
                +0.30 / +2.36%
             |             
            
                13.50
             |           
            
                13.50
             |               
            
                13.00
             |                           
            
                13.00
             | 
            
                13.17
             |                     
            
                13.00
             |                                 
            
                12,400
             |            
            
                 
             |                                       
         
    
        
            | 
                12/24/2010
             | 
            
                +0.10 / +0.79%
             |             
            
                13.00
             |           
            
                13.10
             |               
            
                12.60
             |                           
            
                12.70
             | 
            
                12.88
             |                     
            
                12.70
             |                                 
            
                21,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/23/2010
             | 
            
                -0.30 / -2.33%
             |             
            
                13.20
             |           
            
                13.20
             |               
            
                12.50
             |                           
            
                12.60
             | 
            
                12.57
             |                     
            
                12.60
             |                                 
            
                21,800
             |            
            
                 
             |                                       
         
    
        
            | 
                12/22/2010
             | 
            
                -0.10 / -0.77%
             |             
            
                12.80
             |           
            
                13.50
             |               
            
                12.70
             |                           
            
                12.90
             | 
            
                12.89
             |                     
            
                12.90
             |                                 
            
                38,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/21/2010
             | 
            
                0.00 / 0.00%
             |             
            
                13.20
             |           
            
                13.20
             |               
            
                12.70
             |                           
            
                13.00
             | 
            
                12.94
             |                     
            
                13.00
             |                                 
            
                64,900
             |            
            
                 
             |                                       
         
    
        
            | 
                12/20/2010
             | 
            
                -0.80 / -5.80%
             |             
            
                13.50
             |           
            
                13.70
             |               
            
                13.00
             |                           
            
                13.00
             | 
            
                13.23
             |                     
            
                13.00
             |                                 
            
                40,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/17/2010
             | 
            
                +0.90 / +6.98%
             |             
            
                13.60
             |           
            
                13.80
             |               
            
                12.80
             |                           
            
                13.80
             | 
            
                13.39
             |                     
            
                13.80
             |                                 
            
                47,300
             |            
            
                 
             |                                       
         
    
        
            | 
                12/16/2010
             | 
            
                -0.70 / -5.15%
             |             
            
                13.60
             |           
            
                13.60
             |               
            
                12.80
             |                           
            
                12.90
             | 
            
                12.97
             |                     
            
                12.90
             |                                 
            
                58,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/15/2010
             | 
            
                -0.40 / -2.86%
             |             
            
                14.50
             |           
            
                14.50
             |               
            
                13.30
             |                           
            
                13.60
             | 
            
                13.62
             |                     
            
                13.60
             |                                 
            
                114,500
             |            
            
                 
             |                                       
         
    
        
            | 
                12/14/2010
             | 
            
                -1.00 / -6.67%
             |             
            
                14.00
             |           
            
                15.00
             |               
            
                14.00
             |                           
            
                14.00
             | 
            
                14.24
             |                     
            
                14.00
             |                                 
            
                138,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/13/2010
             | 
            
                +0.60 / +4.17%
             |             
            
                15.00
             |           
            
                15.00
             |               
            
                14.80
             |                           
            
                15.00
             | 
            
                15.00
             |                     
            
                15.00
             |                                 
            
                178,600
             |            
            
                 
             |                                       
         
    
        
            | 
                12/10/2010
             | 
            
                +0.60 / +4.35%
             |             
            
                14.00
             |           
            
                14.40
             |               
            
                13.70
             |                           
            
                14.40
             | 
            
                14.08
             |                     
            
                14.40
             |                                 
            
                142,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/9/2010
             | 
            
                +0.30 / +2.22%
             |             
            
                13.60
             |           
            
                13.90
             |               
            
                12.90
             |                           
            
                13.80
             | 
            
                13.49
             |                     
            
                13.80
             |                                 
            
                134,800
             |            
            
                 
             |                                       
         
    
        
            | 
                12/8/2010
             | 
            
                -0.50 / -3.57%
             |             
            
                14.20
             |           
            
                14.50
             |               
            
                13.50
             |                           
            
                13.50
             | 
            
                13.78
             |                     
            
                13.50
             |                                 
            
                63,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/7/2010
             | 
            
                -0.90 / -6.04%
             |             
            
                14.80
             |           
            
                15.40
             |               
            
                14.00
             |                           
            
                14.00
             | 
            
                14.47
             |                     
            
                14.00
             |                                 
            
                145,600
             |            
            
                 
             |                                       
         
    
        
            | 
                12/6/2010
             | 
            
                +0.80 / +5.67%
             |             
            
                15.00
             |           
            
                15.00
             |               
            
                14.50
             |                           
            
                14.90
             | 
            
                14.98
             |                     
            
                14.90
             |                                 
            
                318,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/3/2010
             | 
            
                +0.80 / +6.02%
             |             
            
                14.00
             |           
            
                14.10
             |               
            
                14.00
             |                           
            
                14.10
             | 
            
                14.10
             |                     
            
                14.10
             |                                 
            
                217,800
             |            
            
                 
             |                                       
         
    
        
            | 
                12/2/2010
             | 
            
                +0.40 / +3.10%
             |             
            
                12.50
             |           
            
                13.80
             |               
            
                12.30
             |                           
            
                13.30
             | 
            
                13.15
             |                     
            
                13.30
             |                                 
            
                158,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/1/2010
             | 
            
                -1.00 / -7.19%
             |             
            
                13.50
             |           
            
                14.20
             |               
            
                12.90
             |                           
            
                12.90
             | 
            
                13.13
             |                     
            
                12.90
             |                                 
            
                177,500
             |            
            
                 
             |                                       
         
    
        
            | 
                11/30/2010
             | 
            
                +0.60 / +4.51%
             |             
            
                13.80
             |           
            
                13.90
             |               
            
                13.50
             |                           
            
                13.90
             | 
            
                13.84
             |                     
            
                13.90
             |                                 
            
                142,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/29/2010
             | 
            
                +0.80 / +6.40%
             |             
            
                12.50
             |           
            
                13.30
             |               
            
                12.30
             |                           
            
                13.30
             | 
            
                12.99
             |                     
            
                13.30
             |                                 
            
                201,000
             |            
            
                 
             |                                       
         
    
        
            | 
                11/26/2010
             | 
            
                +0.40 / +3.31%
             |             
            
                12.10
             |           
            
                12.80
             |               
            
                12.00
             |                           
            
                12.50
             | 
            
                12.52
             |                     
            
                12.50
             |                                 
            
                122,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/25/2010
             | 
            
                +0.60 / +5.22%
             |             
            
                11.40
             |           
            
                12.10
             |               
            
                11.40
             |                           
            
                12.10
             | 
            
                12.02
             |                     
            
                12.10
             |                                 
            
                140,500
             |            
            
                 
             |                                       
         
    
        
            | 
                11/24/2010
             | 
            
                -0.10 / -0.86%
             |             
            
                10.90
             |           
            
                11.70
             |               
            
                10.90
             |                           
            
                11.50
             | 
            
                11.37
             |                     
            
                11.50
             |                                 
            
                45,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/23/2010
             | 
            
                +0.10 / +0.87%
             |             
            
                11.50
             |           
            
                11.60
             |               
            
                11.40
             |                           
            
                11.60
             | 
            
                11.54
             |                     
            
                11.60
             |                                 
            
                24,300
             |            
            
                 
             |                                       
         
    
        
            | 
                11/22/2010
             | 
            
                +0.10 / +0.88%
             |             
            
                11.00
             |           
            
                11.50
             |               
            
                11.00
             |                           
            
                11.50
             | 
            
                11.28
             |                     
            
                11.50
             |                                 
            
                30,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/19/2010
             | 
            
                -0.80 / -6.56%
             |             
            
                12.40
             |           
            
                12.40
             |               
            
                11.40
             |                           
            
                11.40
             | 
            
                11.71
             |                     
            
                11.40
             |                                 
            
                47,700
             |            
            
                 
             |                                       
         
    
        
            | 
                11/18/2010
             | 
            
                +0.70 / +6.09%
             |             
            
                11.80
             |           
            
                12.30
             |               
            
                11.80
             |                           
            
                12.20
             | 
            
                12.19
             |                     
            
                12.20
             |                                 
            
                83,600
             |  
            
                 
             |                                                              
             
    
         
    
    
 |