| 
                 
                    Closing price on 12/8/2014
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    20.90 | 
                 
                
                    | High | 
                    21.20 | 
                 
                
                    | Low | 
                    20.70 | 
                     
                
                    | Volume | 
                    350,730 | 
                                 
                
                    | Split-adjusted Price | 
                    13.53 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NBB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                12/8/2014
             | 
            
                +0.40 / +1.92%
             |             
            
                20.90
             |           
            
                21.20
             |               
            
                20.70
             |                           
            
                21.20
             | 
            
                21.20
             |                     
            
                13.53
             |                                 
            
                350,730
             |            
            
                 
             |                                       
         
    
        
            | 
                12/5/2014
             | 
            
                +0.30 / +1.46%
             |             
            
                20.60
             |           
            
                21.30
             |               
            
                20.60
             |                           
            
                20.80
             | 
            
                20.80
             |                     
            
                13.27
             |                                 
            
                466,940
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/4/2014
             | 
            
                +0.20 / +0.99%
             |             
            
                20.50
             |           
            
                20.80
             |               
            
                20.40
             |                           
            
                20.50
             | 
            
                20.50
             |                     
            
                13.08
             |                                 
            
                497,540
             |            
            
                 
             |                                       
         
    
        
            | 
                12/3/2014
             | 
            
                0.00 / 0.00%
             |             
            
                20.30
             |           
            
                20.50
             |               
            
                20.20
             |                           
            
                20.30
             | 
            
                20.30
             |                     
            
                12.95
             |                                 
            
                359,780
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/2/2014
             | 
            
                0.00 / 0.00%
             |             
            
                20.30
             |           
            
                20.40
             |               
            
                20.20
             |                           
            
                20.30
             | 
            
                20.30
             |                     
            
                12.95
             |                                 
            
                124,680
             |            
            
                 
             |                                       
         
    
        
            | 
                12/1/2014
             | 
            
                -0.20 / -0.98%
             |             
            
                20.30
             |           
            
                20.60
             |               
            
                20.30
             |                           
            
                20.30
             | 
            
                20.30
             |                     
            
                12.95
             |                                 
            
                85,920
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/28/2014
             | 
            
                -0.10 / -0.49%
             |             
            
                20.70
             |           
            
                20.70
             |               
            
                20.30
             |                           
            
                20.50
             | 
            
                20.50
             |                     
            
                13.08
             |                                 
            
                184,710
             |            
            
                 
             |                                       
         
    
        
            | 
                11/27/2014
             | 
            
                +0.60 / +3.00%
             |             
            
                20.20
             |           
            
                20.80
             |               
            
                20.00
             |                           
            
                20.60
             | 
            
                20.60
             |                     
            
                13.14
             |                                 
            
                335,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/26/2014
             | 
            
                -0.40 / -1.96%
             |             
            
                20.40
             |           
            
                20.40
             |               
            
                19.80
             |                           
            
                20.00
             | 
            
                20.00
             |                     
            
                12.76
             |                                 
            
                226,390
             |            
            
                 
             |                                       
         
    
        
            | 
                11/25/2014
             | 
            
                +0.10 / +0.49%
             |             
            
                20.40
             |           
            
                20.50
             |               
            
                20.30
             |                           
            
                20.40
             | 
            
                20.40
             |                     
            
                13.02
             |                                 
            
                107,790
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/24/2014
             | 
            
                +0.20 / +1.00%
             |             
            
                19.90
             |           
            
                20.50
             |               
            
                19.90
             |                           
            
                20.30
             | 
            
                20.30
             |                     
            
                12.95
             |                                 
            
                347,430
             |            
            
                 
             |                                       
         
    
        
            | 
                11/21/2014
             | 
            
                -0.40 / -1.95%
             |             
            
                20.50
             |           
            
                20.50
             |               
            
                20.00
             |                           
            
                20.10
             | 
            
                20.10
             |                     
            
                12.82
             |                                 
            
                282,730
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/20/2014
             | 
            
                +0.10 / +0.49%
             |             
            
                20.50
             |           
            
                20.70
             |               
            
                20.40
             |                           
            
                20.50
             | 
            
                20.50
             |                     
            
                13.08
             |                                 
            
                299,160
             |            
            
                 
             |                                       
         
    
        
            | 
                11/19/2014
             | 
            
                -0.20 / -0.97%
             |             
            
                20.60
             |           
            
                20.60
             |               
            
                20.40
             |                           
            
                20.40
             | 
            
                20.40
             |                     
            
                13.02
             |                                 
            
                380,430
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/18/2014
             | 
            
                0.00 / 0.00%
             |             
            
                20.60
             |           
            
                20.80
             |               
            
                20.50
             |                           
            
                20.60
             | 
            
                20.60
             |                     
            
                13.14
             |                                 
            
                855,820
             |            
            
                 
             |                                       
         
    
        
            | 
                11/17/2014
             | 
            
                0.00 / 0.00%
             |             
            
                20.70
             |           
            
                20.90
             |               
            
                20.50
             |                           
            
                20.60
             | 
            
                20.60
             |                     
            
                13.14
             |                                 
            
                903,990
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/14/2014
             | 
            
                -0.20 / -0.96%
             |             
            
                20.80
             |           
            
                20.80
             |               
            
                20.40
             |                           
            
                20.60
             | 
            
                20.60
             |                     
            
                13.14
             |                                 
            
                293,720
             |            
            
                 
             |                                       
         
    
        
            | 
                11/13/2014
             | 
            
                -0.10 / -0.48%
             |             
            
                21.00
             |           
            
                21.20
             |               
            
                20.70
             |                           
            
                20.80
             | 
            
                20.80
             |                     
            
                13.27
             |                                 
            
                990,470
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/12/2014
             | 
            
                +0.10 / +0.48%
             |             
            
                21.00
             |           
            
                21.00
             |               
            
                20.70
             |                           
            
                20.90
             | 
            
                20.90
             |                     
            
                13.33
             |                                 
            
                323,970
             |            
            
                 
             |                                       
         
    
        
            | 
                11/11/2014
             | 
            
                -0.10 / -0.48%
             |             
            
                21.00
             |           
            
                21.00
             |               
            
                20.60
             |                           
            
                20.80
             | 
            
                20.80
             |                     
            
                13.27
             |                                 
            
                206,020
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/10/2014
             | 
            
                +0.10 / +0.48%
             |             
            
                20.90
             |           
            
                21.30
             |               
            
                20.90
             |                           
            
                20.90
             | 
            
                20.90
             |                     
            
                13.33
             |                                 
            
                391,190
             |            
            
                 
             |                                       
         
    
        
            | 
                11/7/2014
             | 
            
                0.00 / 0.00%
             |             
            
                20.70
             |           
            
                21.00
             |               
            
                20.70
             |                           
            
                20.80
             | 
            
                20.80
             |                     
            
                13.27
             |                                 
            
                219,990
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/6/2014
             | 
            
                0.00 / 0.00%
             |             
            
                21.00
             |           
            
                21.00
             |               
            
                20.70
             |                           
            
                20.80
             | 
            
                20.80
             |                     
            
                13.27
             |                                 
            
                197,410
             |            
            
                 
             |                                       
         
    
        
            | 
                11/5/2014
             | 
            
                0.00 / 0.00%
             |             
            
                21.00
             |           
            
                21.00
             |               
            
                20.50
             |                           
            
                20.80
             | 
            
                20.80
             |                     
            
                13.27
             |                                 
            
                263,960
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/4/2014
             | 
            
                -0.20 / -0.95%
             |             
            
                21.00
             |           
            
                21.00
             |               
            
                20.80
             |                           
            
                20.80
             | 
            
                20.80
             |                     
            
                13.27
             |                                 
            
                325,610
             |            
            
                 
             |                                       
         
    
        
            | 
                11/3/2014
             | 
            
                -0.20 / -0.94%
             |             
            
                21.20
             |           
            
                21.40
             |               
            
                21.00
             |                           
            
                21.00
             | 
            
                21.00
             |                     
            
                13.40
             |                                 
            
                192,080
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/31/2014
             | 
            
                +0.30 / +1.44%
             |             
            
                20.90
             |           
            
                21.40
             |               
            
                20.90
             |                           
            
                21.20
             | 
            
                21.20
             |                     
            
                13.53
             |                                 
            
                221,060
             |            
            
                 
             |                                       
         
    
        
            | 
                10/30/2014
             | 
            
                -0.70 / -3.24%
             |             
            
                21.60
             |           
            
                21.60
             |               
            
                20.80
             |                           
            
                20.90
             | 
            
                20.90
             |                     
            
                13.33
             |                                 
            
                162,260
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/29/2014
             | 
            
                +1.30 / +6.40%
             |             
            
                20.60
             |           
            
                21.60
             |               
            
                20.60
             |                           
            
                21.60
             | 
            
                21.60
             |                     
            
                13.78
             |                                 
            
                866,120
             |            
            
                 
             |                                       
         
    
        
            | 
                10/28/2014
             | 
            
                0.00 / 0.00%
             |             
            
                20.00
             |           
            
                20.60
             |               
            
                20.00
             |                           
            
                20.30
             | 
            
                20.30
             |                     
            
                12.95
             |                                 
            
                434,980
             |  
            
                 
             |                                                              
             
    
         
    
    
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