| 
                 
                    Closing price on 5/19/2008
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    12.30 | 
                 
                
                    | High | 
                    12.30 | 
                 
                
                    | Low | 
                    12.30 | 
                     
                
                    | Volume | 
                    2,100 | 
                                 
                
                    | Split-adjusted Price | 
                    12.30 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SDD Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/19/2008
             | 
            
                -0.20 / -1.60%
             |             
            
                12.30
             |           
            
                12.30
             |               
            
                12.30
             |                           
            
                12.30
             | 
            
                12.30
             |                     
            
                12.30
             |                                 
            
                2,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2008
             | 
            
                -0.30 / -2.34%
             |             
            
                12.50
             |           
            
                13.10
             |               
            
                12.50
             |                           
            
                12.50
             | 
            
                12.61
             |                     
            
                12.50
             |                                 
            
                19,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/15/2008
             | 
            
                -0.30 / -2.29%
             |             
            
                12.80
             |           
            
                12.80
             |               
            
                12.80
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                12.80
             |                                 
            
                1,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/14/2008
             | 
            
                -0.40 / -2.96%
             |             
            
                13.10
             |           
            
                13.10
             |               
            
                13.10
             |                           
            
                13.10
             | 
            
                13.10
             |                     
            
                13.10
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/13/2008
             | 
            
                -0.40 / -2.88%
             |             
            
                13.50
             |           
            
                13.50
             |               
            
                13.50
             |                           
            
                13.50
             | 
            
                13.50
             |                     
            
                13.50
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/12/2008
             | 
            
                -0.40 / -2.80%
             |             
            
                13.90
             |           
            
                13.90
             |               
            
                13.90
             |                           
            
                13.90
             | 
            
                13.90
             |                     
            
                13.90
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/9/2008
             | 
            
                -0.40 / -2.72%
             |             
            
                14.30
             |           
            
                14.30
             |               
            
                14.30
             |                           
            
                14.30
             | 
            
                14.30
             |                     
            
                14.30
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/8/2008
             | 
            
                -0.40 / -2.65%
             |             
            
                14.70
             |           
            
                14.70
             |               
            
                14.70
             |                           
            
                14.70
             | 
            
                14.70
             |                     
            
                14.70
             |                                 
            
                1,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/7/2008
             | 
            
                -0.40 / -2.58%
             |             
            
                15.10
             |           
            
                15.10
             |               
            
                15.10
             |                           
            
                15.10
             | 
            
                15.10
             |                     
            
                15.10
             |                                 
            
                700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/6/2008
             | 
            
                -0.40 / -2.52%
             |             
            
                15.50
             |           
            
                15.50
             |               
            
                15.50
             |                           
            
                15.50
             | 
            
                15.50
             |                     
            
                15.50
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/5/2008
             | 
            
                -0.10 / -0.63%
             |             
            
                15.90
             |           
            
                15.90
             |               
            
                15.90
             |                           
            
                15.90
             | 
            
                15.90
             |                     
            
                15.90
             |                                 
            
                12,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/29/2008
             | 
            
                -0.30 / -1.84%
             |             
            
                16.30
             |           
            
                16.50
             |               
            
                16.00
             |                           
            
                16.00
             | 
            
                16.30
             |                     
            
                16.00
             |                                 
            
                27,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/28/2008
             | 
            
                +0.20 / +1.24%
             |             
            
                15.80
             |           
            
                16.30
             |               
            
                15.70
             |                           
            
                16.30
             | 
            
                16.11
             |                     
            
                16.30
             |                                 
            
                39,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/25/2008
             | 
            
                0.00 / 0.00%
             |             
            
                16.00
             |           
            
                16.20
             |               
            
                15.80
             |                           
            
                16.10
             | 
            
                15.95
             |                     
            
                16.10
             |                                 
            
                34,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/24/2008
             | 
            
                -0.40 / -2.42%
             |             
            
                16.10
             |           
            
                16.70
             |               
            
                16.10
             |                           
            
                16.10
             | 
            
                16.16
             |                     
            
                16.10
             |                                 
            
                72,400
             |            
            
                 
             |                                       
         
    
        
            | 
                4/23/2008
             | 
            
                -0.50 / -2.94%
             |             
            
                16.50
             |           
            
                16.50
             |               
            
                16.50
             |                           
            
                16.50
             | 
            
                16.50
             |                     
            
                16.50
             |                                 
            
                1,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/22/2008
             | 
            
                -0.50 / -2.86%
             |             
            
                17.00
             |           
            
                17.00
             |               
            
                17.00
             |                           
            
                17.00
             | 
            
                17.00
             |                     
            
                17.00
             |                                 
            
                4,700
             |            
            
                 
             |                                       
         
    
        
            | 
                4/21/2008
             | 
            
                -0.40 / -2.23%
             |             
            
                17.70
             |           
            
                17.70
             |               
            
                17.50
             |                           
            
                17.50
             | 
            
                17.54
             |                     
            
                17.50
             |                                 
            
                5,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/18/2008
             | 
            
                -0.60 / -3.24%
             |             
            
                18.30
             |           
            
                18.80
             |               
            
                17.80
             |                           
            
                17.90
             | 
            
                17.98
             |                     
            
                17.90
             |                                 
            
                25,200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/17/2008
             | 
            
                +0.10 / +0.54%
             |             
            
                17.90
             |           
            
                18.90
             |               
            
                17.90
             |                           
            
                18.50
             | 
            
                18.31
             |                     
            
                18.50
             |                                 
            
                93,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/16/2008
             | 
            
                -0.50 / -2.65%
             |             
            
                18.40
             |           
            
                18.40
             |               
            
                18.40
             |                           
            
                18.40
             | 
            
                18.40
             |                     
            
                18.40
             |                                 
            
                4,400
             |            
            
                 
             |                                       
         
    
        
            | 
                4/11/2008
             | 
            
                -0.50 / -2.58%
             |             
            
                18.90
             |           
            
                18.90
             |               
            
                18.90
             |                           
            
                18.90
             | 
            
                18.90
             |                     
            
                18.90
             |                                 
            
                800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/10/2008
             | 
            
                -0.30 / -1.52%
             |             
            
                19.40
             |           
            
                19.40
             |               
            
                19.40
             |                           
            
                19.40
             | 
            
                19.40
             |                     
            
                19.40
             |                                 
            
                3,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/9/2008
             | 
            
                -1.10 / -5.29%
             |             
            
                20.80
             |           
            
                20.90
             |               
            
                19.70
             |                           
            
                19.70
             | 
            
                19.86
             |                     
            
                19.70
             |                                 
            
                16,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/8/2008
             | 
            
                +0.40 / +1.96%
             |             
            
                21.00
             |           
            
                21.00
             |               
            
                19.80
             |                           
            
                20.80
             | 
            
                20.25
             |                     
            
                20.80
             |                                 
            
                123,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/7/2008
             | 
            
                +0.50 / +2.51%
             |             
            
                20.40
             |           
            
                20.40
             |               
            
                20.40
             |                           
            
                20.40
             | 
            
                20.40
             |                     
            
                20.40
             |                                 
            
                1,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/4/2008
             | 
            
                +0.30 / +1.53%
             |             
            
                19.90
             |           
            
                19.90
             |               
            
                19.90
             |                           
            
                19.90
             | 
            
                19.90
             |                     
            
                19.90
             |                                 
            
                2,900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/3/2008
             | 
            
                +0.30 / +1.55%
             |             
            
                19.60
             |           
            
                19.60
             |               
            
                19.60
             |                           
            
                19.60
             | 
            
                19.60
             |                     
            
                19.60
             |                                 
            
                400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/2/2008
             | 
            
                +0.30 / +1.58%
             |             
            
                19.30
             |           
            
                19.30
             |               
            
                19.30
             |                           
            
                19.30
             | 
            
                19.30
             |                     
            
                19.30
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/1/2008
             | 
            
                +0.30 / +1.60%
             |             
            
                19.00
             |           
            
                19.00
             |               
            
                19.00
             |                           
            
                19.00
             | 
            
                19.00
             |                     
            
                19.00
             |                                 
            
                3,700
             |  
            
                 
             |                                                              
             
    
         
    
    
 |