| 
                 
                    Closing price on 2/25/2009
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    20.60 | 
                 
                
                    | High | 
                    20.60 | 
                 
                
                    | Low | 
                    20.60 | 
                     
                
                    | Volume | 
                    37,340 | 
                                 
                
                    | Split-adjusted Price | 
                    6.06 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NBB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                2/25/2009
             | 
            
                +0.90 / +4.57%
             |             
            
                20.60
             |           
            
                20.60
             |               
            
                20.60
             |                           
            
                20.60
             | 
            
                20.60
             |                     
            
                6.06
             |                                 
            
                37,340
             |            
            
                 
             |                                       
         
    
        
            | 
                2/24/2009
             | 
            
                -0.90 / -4.37%
             |             
            
                19.70
             |           
            
                21.50
             |               
            
                19.70
             |                           
            
                19.70
             | 
            
                19.70
             |                     
            
                5.80
             |                                 
            
                95,490
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/23/2009
             | 
            
                -0.90 / -4.19%
             |             
            
                21.50
             |           
            
                21.50
             |               
            
                20.60
             |                           
            
                20.60
             | 
            
                20.60
             |                     
            
                6.06
             |                                 
            
                180,970
             |            
            
                 
             |                                       
         
    
        
            | 
                2/20/2009
             | 
            
                -0.10 / -0.46%
             |             
            
                20.70
             |           
            
                21.50
             |               
            
                20.60
             |                           
            
                21.50
             | 
            
                21.50
             |                     
            
                6.33
             |                                 
            
                109,820
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/19/2009
             | 
            
                0.00 / 0.00%
             |             
            
                20.60
             |           
            
                21.80
             |               
            
                20.60
             |                           
            
                21.60
             | 
            
                21.60
             |                     
            
                6.36
             |                                 
            
                175,760
             |            
            
                 
             |                                       
         
    
        
            | 
                2/18/2009
             | 
            
                +21.60 / +0.00%
             |             
            
                21.60
             |           
            
                24.00
             |               
            
                21.60
             |                           
            
                21.60
             | 
            
                21.60
             |                     
            
                6.36
             |                                 
            
                561,490
             |  
            
                 
             |                                                              
             
    
         
    
    
 |