| 
                 
                    Closing price on 2/2/2015
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    20.20 | 
                 
                
                    | High | 
                    20.30 | 
                 
                
                    | Low | 
                    20.10 | 
                     
                
                    | Volume | 
                    98,710 | 
                                 
                
                    | Split-adjusted Price | 
                    12.82 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NBB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                2/2/2015
             | 
            
                -0.10 / -0.50%
             |             
            
                20.20
             |           
            
                20.30
             |               
            
                20.10
             |                           
            
                20.10
             | 
            
                20.10
             |                     
            
                12.82
             |                                 
            
                98,710
             |            
            
                 
             |                                       
         
    
        
            | 
                1/30/2015
             | 
            
                -0.30 / -1.46%
             |             
            
                20.50
             |           
            
                20.70
             |               
            
                20.20
             |                           
            
                20.20
             | 
            
                20.20
             |                     
            
                12.89
             |                                 
            
                292,590
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/29/2015
             | 
            
                -0.20 / -0.97%
             |             
            
                20.90
             |           
            
                20.90
             |               
            
                20.50
             |                           
            
                20.50
             | 
            
                20.50
             |                     
            
                13.08
             |                                 
            
                95,680
             |            
            
                 
             |                                       
         
    
        
            | 
                1/28/2015
             | 
            
                0.00 / 0.00%
             |             
            
                20.70
             |           
            
                20.90
             |               
            
                20.60
             |                           
            
                20.70
             | 
            
                20.70
             |                     
            
                13.21
             |                                 
            
                78,710
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/27/2015
             | 
            
                +0.30 / +1.47%
             |             
            
                20.50
             |           
            
                21.20
             |               
            
                20.50
             |                           
            
                20.70
             | 
            
                20.70
             |                     
            
                13.21
             |                                 
            
                547,030
             |            
            
                 
             |                                       
         
    
        
            | 
                1/26/2015
             | 
            
                -0.10 / -0.49%
             |             
            
                20.60
             |           
            
                20.60
             |               
            
                20.40
             |                           
            
                20.40
             | 
            
                20.40
             |                     
            
                13.02
             |                                 
            
                90,560
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/23/2015
             | 
            
                0.00 / 0.00%
             |             
            
                20.50
             |           
            
                20.70
             |               
            
                20.50
             |                           
            
                20.50
             | 
            
                20.50
             |                     
            
                13.08
             |                                 
            
                120,070
             |            
            
                 
             |                                       
         
    
        
            | 
                1/22/2015
             | 
            
                0.00 / 0.00%
             |             
            
                20.50
             |           
            
                20.70
             |               
            
                20.50
             |                           
            
                20.50
             | 
            
                20.50
             |                     
            
                13.08
             |                                 
            
                70,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/21/2015
             | 
            
                -0.10 / -0.49%
             |             
            
                20.50
             |           
            
                20.70
             |               
            
                20.50
             |                           
            
                20.50
             | 
            
                20.50
             |                     
            
                13.08
             |                                 
            
                69,940
             |            
            
                 
             |                                       
         
    
        
            | 
                1/20/2015
             | 
            
                -0.10 / -0.48%
             |             
            
                20.60
             |           
            
                20.80
             |               
            
                20.60
             |                           
            
                20.60
             | 
            
                20.60
             |                     
            
                13.14
             |                                 
            
                54,110
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/19/2015
             | 
            
                +0.20 / +0.98%
             |             
            
                20.50
             |           
            
                20.80
             |               
            
                20.40
             |                           
            
                20.70
             | 
            
                20.70
             |                     
            
                13.21
             |                                 
            
                1,023,120
             |            
            
                 
             |                                       
         
    
        
            | 
                1/16/2015
             | 
            
                -0.10 / -0.49%
             |             
            
                20.50
             |           
            
                20.80
             |               
            
                20.50
             |                           
            
                20.50
             | 
            
                20.50
             |                     
            
                13.08
             |                                 
            
                212,820
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/15/2015
             | 
            
                -0.20 / -0.96%
             |             
            
                20.70
             |           
            
                20.80
             |               
            
                20.60
             |                           
            
                20.60
             | 
            
                20.60
             |                     
            
                13.14
             |                                 
            
                144,880
             |            
            
                 
             |                                       
         
    
        
            | 
                1/14/2015
             | 
            
                +0.30 / +1.46%
             |             
            
                20.40
             |           
            
                21.00
             |               
            
                20.40
             |                           
            
                20.80
             | 
            
                20.80
             |                     
            
                13.27
             |                                 
            
                266,020
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/13/2015
             | 
            
                -0.10 / -0.49%
             |             
            
                20.30
             |           
            
                20.80
             |               
            
                20.30
             |                           
            
                20.50
             | 
            
                20.50
             |                     
            
                13.08
             |                                 
            
                40,870
             |            
            
                 
             |                                       
         
    
        
            | 
                1/12/2015
             | 
            
                -0.10 / -0.48%
             |             
            
                21.00
             |           
            
                21.00
             |               
            
                20.60
             |                           
            
                20.60
             | 
            
                20.60
             |                     
            
                13.14
             |                                 
            
                45,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/9/2015
             | 
            
                +0.10 / +0.49%
             |             
            
                20.60
             |           
            
                21.30
             |               
            
                20.60
             |                           
            
                20.70
             | 
            
                20.70
             |                     
            
                13.21
             |                                 
            
                138,920
             |            
            
                 
             |                                       
         
    
        
            | 
                1/8/2015
             | 
            
                0.00 / 0.00%
             |             
            
                20.90
             |           
            
                20.90
             |               
            
                20.60
             |                           
            
                20.60
             | 
            
                20.60
             |                     
            
                13.14
             |                                 
            
                50,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/7/2015
             | 
            
                -0.10 / -0.48%
             |             
            
                20.60
             |           
            
                21.00
             |               
            
                20.60
             |                           
            
                20.60
             | 
            
                20.60
             |                     
            
                13.14
             |                                 
            
                106,520
             |            
            
                 
             |                                       
         
    
        
            | 
                1/6/2015
             | 
            
                -0.20 / -0.96%
             |             
            
                20.90
             |           
            
                20.90
             |               
            
                20.50
             |                           
            
                20.70
             | 
            
                20.70
             |                     
            
                13.21
             |                                 
            
                84,690
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/5/2015
             | 
            
                -0.90 / -4.13%
             |             
            
                21.80
             |           
            
                21.80
             |               
            
                20.90
             |                           
            
                20.90
             | 
            
                20.90
             |                     
            
                13.33
             |                                 
            
                109,990
             |            
            
                 
             |                                       
         
    
        
            | 
                12/31/2014
             | 
            
                +1.20 / +5.83%
             |             
            
                20.60
             |           
            
                21.80
             |               
            
                20.50
             |                           
            
                21.80
             | 
            
                21.80
             |                     
            
                13.91
             |                                 
            
                301,570
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/30/2014
             | 
            
                +0.60 / +3.00%
             |             
            
                20.00
             |           
            
                20.60
             |               
            
                19.70
             |                           
            
                20.60
             | 
            
                20.60
             |                     
            
                13.14
             |                                 
            
                127,810
             |            
            
                 
             |                                       
         
    
        
            | 
                12/29/2014
             | 
            
                0.00 / 0.00%
             |             
            
                20.30
             |           
            
                20.40
             |               
            
                19.60
             |                           
            
                20.00
             | 
            
                20.00
             |                     
            
                12.76
             |                                 
            
                582,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/26/2014
             | 
            
                -0.20 / -0.99%
             |             
            
                20.20
             |           
            
                20.20
             |               
            
                20.00
             |                           
            
                20.00
             | 
            
                20.00
             |                     
            
                12.76
             |                                 
            
                63,430
             |            
            
                 
             |                                       
         
    
        
            | 
                12/25/2014
             | 
            
                -0.30 / -1.46%
             |             
            
                20.50
             |           
            
                20.50
             |               
            
                20.20
             |                           
            
                20.20
             | 
            
                20.20
             |                     
            
                12.89
             |                                 
            
                618,590
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/24/2014
             | 
            
                +0.20 / +0.99%
             |             
            
                20.10
             |           
            
                20.70
             |               
            
                20.10
             |                           
            
                20.50
             | 
            
                20.50
             |                     
            
                13.08
             |                                 
            
                448,740
             |            
            
                 
             |                                       
         
    
        
            | 
                12/23/2014
             | 
            
                -0.20 / -0.98%
             |             
            
                20.90
             |           
            
                20.90
             |               
            
                20.30
             |                           
            
                20.30
             | 
            
                20.30
             |                     
            
                12.95
             |                                 
            
                117,560
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/22/2014
             | 
            
                0.00 / 0.00%
             |             
            
                20.80
             |           
            
                20.80
             |               
            
                20.30
             |                           
            
                20.50
             | 
            
                20.50
             |                     
            
                13.08
             |                                 
            
                153,190
             |            
            
                 
             |                                       
         
    
        
            | 
                12/19/2014
             | 
            
                -0.30 / -1.44%
             |             
            
                21.00
             |           
            
                21.00
             |               
            
                20.20
             |                           
            
                20.50
             | 
            
                20.50
             |                     
            
                13.08
             |                                 
            
                110,880
             |  
            
                 
             |                                                              
             
    
         
    
    
 |