| 
                 
                    Closing price on 9/19/2008
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    12.30 | 
                 
                
                    | High | 
                    14.10 | 
                 
                
                    | Low | 
                    12.30 | 
                     
                
                    | Volume | 
                    42,300 | 
                                 
                
                    | Split-adjusted Price | 
                    14.10 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SDD Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                9/19/2008
             | 
            
                +0.90 / +6.82%
             |             
            
                12.30
             |           
            
                14.10
             |               
            
                12.30
             |                           
            
                14.10
             | 
            
                13.52
             |                     
            
                14.10
             |                                 
            
                42,300
             |            
            
                 
             |                                       
         
    
        
            | 
                9/18/2008
             | 
            
                -0.90 / -6.38%
             |             
            
                13.20
             |           
            
                13.20
             |               
            
                13.20
             |                           
            
                13.20
             | 
            
                13.20
             |                     
            
                13.20
             |                                 
            
                2,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/17/2008
             | 
            
                -0.90 / -6.00%
             |             
            
                14.10
             |           
            
                14.10
             |               
            
                14.10
             |                           
            
                14.10
             | 
            
                14.10
             |                     
            
                14.10
             |                                 
            
                5,300
             |            
            
                 
             |                                       
         
    
        
            | 
                9/16/2008
             | 
            
                -0.90 / -5.66%
             |             
            
                15.00
             |           
            
                16.20
             |               
            
                15.00
             |                           
            
                15.00
             | 
            
                15.05
             |                     
            
                15.00
             |                                 
            
                23,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/15/2008
             | 
            
                -1.10 / -6.47%
             |             
            
                15.90
             |           
            
                17.40
             |               
            
                15.90
             |                           
            
                15.90
             | 
            
                16.11
             |                     
            
                15.90
             |                                 
            
                139,900
             |            
            
                 
             |                                       
         
    
        
            | 
                9/12/2008
             | 
            
                -1.20 / -6.59%
             |             
            
                17.00
             |           
            
                17.00
             |               
            
                17.00
             |                           
            
                17.00
             | 
            
                17.00
             |                     
            
                17.00
             |                                 
            
                5,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/11/2008
             | 
            
                -0.40 / -2.15%
             |             
            
                18.20
             |           
            
                18.30
             |               
            
                18.20
             |                           
            
                18.20
             | 
            
                18.24
             |                     
            
                18.20
             |                                 
            
                9,400
             |            
            
                 
             |                                       
         
    
        
            | 
                9/10/2008
             | 
            
                -0.90 / -4.62%
             |             
            
                20.50
             |           
            
                20.80
             |               
            
                18.20
             |                           
            
                18.60
             | 
            
                19.50
             |                     
            
                18.60
             |                                 
            
                112,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/9/2008
             | 
            
                +1.00 / +5.41%
             |             
            
                19.50
             |           
            
                19.50
             |               
            
                19.40
             |                           
            
                19.50
             | 
            
                19.50
             |                     
            
                19.50
             |                                 
            
                125,700
             |            
            
                 
             |                                       
         
    
        
            | 
                9/8/2008
             | 
            
                +1.20 / +6.94%
             |             
            
                18.50
             |           
            
                18.50
             |               
            
                17.30
             |                           
            
                18.50
             | 
            
                18.28
             |                     
            
                18.50
             |                                 
            
                258,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/5/2008
             | 
            
                +0.90 / +5.49%
             |             
            
                17.30
             |           
            
                17.30
             |               
            
                17.00
             |                           
            
                17.30
             | 
            
                17.28
             |                     
            
                17.30
             |                                 
            
                138,100
             |            
            
                 
             |                                       
         
    
        
            | 
                9/4/2008
             | 
            
                +1.00 / +6.49%
             |             
            
                16.40
             |           
            
                16.40
             |               
            
                14.60
             |                           
            
                16.40
             | 
            
                16.25
             |                     
            
                16.40
             |                                 
            
                134,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/3/2008
             | 
            
                +0.70 / +4.76%
             |             
            
                15.40
             |           
            
                15.40
             |               
            
                15.40
             |                           
            
                15.40
             | 
            
                15.40
             |                     
            
                15.40
             |                                 
            
                12,900
             |            
            
                 
             |                                       
         
    
        
            | 
                8/29/2008
             | 
            
                -0.30 / -2.00%
             |             
            
                14.20
             |           
            
                15.20
             |               
            
                14.20
             |                           
            
                14.70
             | 
            
                14.35
             |                     
            
                14.70
             |                                 
            
                96,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/28/2008
             | 
            
                -1.10 / -6.83%
             |             
            
                15.50
             |           
            
                15.50
             |               
            
                15.00
             |                           
            
                15.00
             | 
            
                15.16
             |                     
            
                15.00
             |                                 
            
                47,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/27/2008
             | 
            
                +1.00 / +6.62%
             |             
            
                16.10
             |           
            
                16.10
             |               
            
                15.60
             |                           
            
                16.10
             | 
            
                16.10
             |                     
            
                16.10
             |                                 
            
                122,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/26/2008
             | 
            
                +0.90 / +6.34%
             |             
            
                15.10
             |           
            
                15.10
             |               
            
                15.10
             |                           
            
                15.10
             | 
            
                15.10
             |                     
            
                15.10
             |                                 
            
                15,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/25/2008
             | 
            
                +1.00 / +7.58%
             |             
            
                14.00
             |           
            
                14.20
             |               
            
                14.00
             |                           
            
                14.20
             | 
            
                14.17
             |                     
            
                14.20
             |                                 
            
                54,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/22/2008
             | 
            
                +0.20 / +1.54%
             |             
            
                13.40
             |           
            
                13.60
             |               
            
                12.50
             |                           
            
                13.20
             | 
            
                13.30
             |                     
            
                13.20
             |                                 
            
                128,200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/21/2008
             | 
            
                +1.00 / +8.33%
             |             
            
                11.40
             |           
            
                13.00
             |               
            
                11.40
             |                           
            
                13.00
             | 
            
                12.79
             |                     
            
                13.00
             |                                 
            
                113,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/20/2008
             | 
            
                -0.70 / -5.51%
             |             
            
                12.00
             |           
            
                12.60
             |               
            
                12.00
             |                           
            
                12.00
             | 
            
                12.16
             |                     
            
                12.00
             |                                 
            
                67,800
             |            
            
                 
             |                                       
         
    
        
            | 
                8/19/2008
             | 
            
                -0.80 / -5.93%
             |             
            
                14.20
             |           
            
                14.20
             |               
            
                12.50
             |                           
            
                12.70
             | 
            
                12.79
             |                     
            
                12.70
             |                                 
            
                47,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/18/2008
             | 
            
                +0.80 / +6.30%
             |             
            
                13.50
             |           
            
                13.50
             |               
            
                13.10
             |                           
            
                13.50
             | 
            
                13.38
             |                     
            
                13.50
             |                                 
            
                65,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/15/2008
             | 
            
                +0.40 / +3.25%
             |             
            
                12.70
             |           
            
                12.70
             |               
            
                12.70
             |                           
            
                12.70
             | 
            
                12.70
             |                     
            
                12.70
             |                                 
            
                41,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/14/2008
             | 
            
                +0.30 / +2.50%
             |             
            
                12.30
             |           
            
                12.30
             |               
            
                11.90
             |                           
            
                12.30
             | 
            
                12.25
             |                     
            
                12.30
             |                                 
            
                65,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/13/2008
             | 
            
                +0.40 / +3.45%
             |             
            
                12.00
             |           
            
                12.00
             |               
            
                11.50
             |                           
            
                12.00
             | 
            
                11.91
             |                     
            
                12.00
             |                                 
            
                61,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/12/2008
             | 
            
                +0.40 / +3.57%
             |             
            
                11.60
             |           
            
                11.60
             |               
            
                11.30
             |                           
            
                11.60
             | 
            
                11.59
             |                     
            
                11.60
             |                                 
            
                75,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/11/2008
             | 
            
                +0.30 / +2.75%
             |             
            
                11.20
             |           
            
                11.20
             |               
            
                11.20
             |                           
            
                11.20
             | 
            
                11.20
             |                     
            
                11.20
             |                                 
            
                3,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/8/2008
             | 
            
                +0.40 / +3.81%
             |             
            
                10.90
             |           
            
                10.90
             |               
            
                10.50
             |                           
            
                10.90
             | 
            
                10.77
             |                     
            
                10.90
             |                                 
            
                41,600
             |            
            
                 
             |                                       
         
    
        
            | 
                8/7/2008
             | 
            
                +0.10 / +0.96%
             |             
            
                9.80
             |           
            
                10.60
             |               
            
                9.80
             |                           
            
                10.50
             | 
            
                10.50
             |                     
            
                10.50
             |                                 
            
                54,400
             |  
            
                 
             |                                                              
             
    
         
    
    
 |