| 
                 
                    Closing price on 2/24/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    17.80 | 
                 
                
                    | High | 
                    17.90 | 
                 
                
                    | Low | 
                    17.50 | 
                     
                
                    | Volume | 
                    11,490 | 
                                 
                
                    | Split-adjusted Price | 
                    9.47 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
C21 Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                2/24/2012
             | 
            
                +0.10 / +0.56%
             |             
            
                17.80
             |           
            
                17.90
             |               
            
                17.50
             |                           
            
                17.90
             | 
            
                17.90
             |                     
            
                9.47
             |                                 
            
                11,490
             |            
            
                 
             |                                       
         
    
        
            | 
                2/23/2012
             | 
            
                -0.10 / -0.56%
             |             
            
                18.10
             |           
            
                18.10
             |               
            
                17.30
             |                           
            
                17.80
             | 
            
                17.80
             |                     
            
                9.42
             |                                 
            
                5,260
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/22/2012
             | 
            
                -0.40 / -2.19%
             |             
            
                18.10
             |           
            
                18.10
             |               
            
                17.80
             |                           
            
                17.90
             | 
            
                17.90
             |                     
            
                9.47
             |                                 
            
                10,160
             |            
            
                 
             |                                       
         
    
        
            | 
                2/21/2012
             | 
            
                +0.50 / +2.81%
             |             
            
                18.30
             |           
            
                18.30
             |               
            
                18.30
             |                           
            
                18.30
             | 
            
                18.30
             |                     
            
                9.68
             |                                 
            
                10
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/20/2012
             | 
            
                +0.80 / +4.71%
             |             
            
                17.20
             |           
            
                17.80
             |               
            
                16.80
             |                           
            
                17.80
             | 
            
                17.80
             |                     
            
                9.42
             |                                 
            
                9,920
             |            
            
                 
             |                                       
         
    
        
            | 
                2/17/2012
             | 
            
                0.00 / 0.00%
             |             
            
                17.00
             |           
            
                17.00
             |               
            
                17.00
             |                           
            
                17.00
             | 
            
                17.00
             |                     
            
                8.99
             |                                 
            
                10
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/16/2012
             | 
            
                0.00 / 0.00%
             |             
            
                17.00
             |           
            
                17.00
             |               
            
                17.00
             |                           
            
                17.00
             | 
            
                17.00
             |                     
            
                8.99
             |                                 
            
                15,520
             |            
            
                 
             |                                       
         
    
        
            | 
                2/15/2012
             | 
            
                0.00 / 0.00%
             |             
            
                17.00
             |           
            
                17.00
             |               
            
                16.50
             |                           
            
                17.00
             | 
            
                17.00
             |                     
            
                8.99
             |                                 
            
                1,270
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/14/2012
             | 
            
                -0.10 / -0.58%
             |             
            
                17.10
             |           
            
                17.10
             |               
            
                16.70
             |                           
            
                17.00
             | 
            
                17.00
             |                     
            
                8.99
             |                                 
            
                120
             |            
            
                 
             |                                       
         
    
        
            | 
                2/13/2012
             | 
            
                +0.10 / +0.59%
             |             
            
                17.00
             |           
            
                17.10
             |               
            
                17.00
             |                           
            
                17.10
             | 
            
                17.10
             |                     
            
                9.05
             |                                 
            
                5,080
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/10/2012
             | 
            
                0.00 / 0.00%
             |             
            
                16.90
             |           
            
                17.00
             |               
            
                16.90
             |                           
            
                17.00
             | 
            
                17.00
             |                     
            
                8.99
             |                                 
            
                2,040
             |            
            
                 
             |                                       
         
    
        
            | 
                2/9/2012
             | 
            
                -0.20 / -1.16%
             |             
            
                17.20
             |           
            
                17.20
             |               
            
                16.40
             |                           
            
                17.00
             | 
            
                17.00
             |                     
            
                8.99
             |                                 
            
                1,920
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/8/2012
             | 
            
                0.00 / 0.00%
             |             
            
                17.20
             |           
            
                17.20
             |               
            
                17.00
             |                           
            
                17.20
             | 
            
                17.20
             |                     
            
                9.10
             |                                 
            
                620
             |            
            
                 
             |                                       
         
    
        
            | 
                2/7/2012
             | 
            
                +0.20 / +1.18%
             |             
            
                17.00
             |           
            
                17.20
             |               
            
                17.00
             |                           
            
                17.20
             | 
            
                17.20
             |                     
            
                9.10
             |                                 
            
                18,280
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/6/2012
             | 
            
                -0.50 / -2.86%
             |             
            
                17.50
             |           
            
                17.50
             |               
            
                17.00
             |                           
            
                17.00
             | 
            
                17.00
             |                     
            
                8.99
             |                                 
            
                3,230
             |            
            
                 
             |                                       
         
    
        
            | 
                2/3/2012
             | 
            
                +0.40 / +2.34%
             |             
            
                17.50
             |           
            
                17.50
             |               
            
                17.50
             |                           
            
                17.50
             | 
            
                17.50
             |                     
            
                9.26
             |                                 
            
                70
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/2/2012
             | 
            
                -0.70 / -3.93%
             |             
            
                17.00
             |           
            
                17.80
             |               
            
                17.00
             |                           
            
                17.10
             | 
            
                17.10
             |                     
            
                9.05
             |                                 
            
                18,770
             |            
            
                 
             |                                       
         
    
        
            | 
                2/1/2012
             | 
            
                0.00 / 0.00%
             |             
            
                17.00
             |           
            
                17.90
             |               
            
                17.00
             |                           
            
                17.80
             | 
            
                17.80
             |                     
            
                9.42
             |                                 
            
                3,860
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/31/2012
             | 
            
                -0.90 / -4.81%
             |             
            
                17.80
             |           
            
                18.50
             |               
            
                17.80
             |                           
            
                17.80
             | 
            
                17.80
             |                     
            
                9.42
             |                                 
            
                1,640
             |            
            
                 
             |                                       
         
    
        
            | 
                1/30/2012
             | 
            
                +0.80 / +4.47%
             |             
            
                18.70
             |           
            
                18.70
             |               
            
                18.70
             |                           
            
                18.70
             | 
            
                18.70
             |                     
            
                9.89
             |                                 
            
                800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/20/2012
             | 
            
                +0.40 / +2.29%
             |             
            
                18.00
             |           
            
                18.00
             |               
            
                17.90
             |                           
            
                17.90
             | 
            
                17.90
             |                     
            
                9.47
             |                                 
            
                1,860
             |            
            
                 
             |                                       
         
    
        
            | 
                1/19/2012
             | 
            
                -0.10 / -0.57%
             |             
            
                17.50
             |           
            
                17.50
             |               
            
                17.50
             |                           
            
                17.50
             | 
            
                17.50
             |                     
            
                9.26
             |                                 
            
                360
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/18/2012
             | 
            
                0.00 / 0.00%
             |             
            
                17.60
             |           
            
                17.60
             |               
            
                17.60
             |                           
            
                17.60
             | 
            
                17.60
             |                     
            
                9.31
             |                                 
            
                950
             |            
            
                 
             |                                       
         
    
        
            | 
                1/17/2012
             | 
            
                0.00 / 0.00%
             |             
            
                17.50
             |           
            
                18.30
             |               
            
                17.50
             |                           
            
                17.60
             | 
            
                17.60
             |                     
            
                9.31
             |                                 
            
                16,940
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/16/2012
             | 
            
                -0.30 / -1.68%
             |             
            
                17.50
             |           
            
                17.60
             |               
            
                17.10
             |                           
            
                17.60
             | 
            
                17.60
             |                     
            
                9.31
             |                                 
            
                3,220
             |            
            
                 
             |                                       
         
    
        
            | 
                1/13/2012
             | 
            
                +0.10 / +0.56%
             |             
            
                17.90
             |           
            
                17.90
             |               
            
                17.90
             |                           
            
                17.90
             | 
            
                17.90
             |                     
            
                9.47
             |                                 
            
                10
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/12/2012
             | 
            
                +0.40 / +2.30%
             |             
            
                17.80
             |           
            
                17.80
             |               
            
                17.80
             |                           
            
                17.80
             | 
            
                17.80
             |                     
            
                9.42
             |                                 
            
                70
             |            
            
                 
             |                                       
         
    
        
            | 
                1/11/2012
             | 
            
                0.00 / 0.00%
             |             
            
                17.60
             |           
            
                17.70
             |               
            
                17.40
             |                           
            
                17.40
             | 
            
                17.40
             |                     
            
                9.21
             |                                 
            
                1,420
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/10/2012
             | 
            
                +0.20 / +1.16%
             |             
            
                17.20
             |           
            
                17.40
             |               
            
                17.20
             |                           
            
                17.40
             | 
            
                17.40
             |                     
            
                9.21
             |                                 
            
                23,250
             |            
            
                 
             |                                       
         
    
        
            | 
                1/9/2012
             | 
            
                +0.10 / +0.58%
             |             
            
                17.10
             |           
            
                17.20
             |               
            
                16.80
             |                           
            
                17.20
             | 
            
                17.20
             |                     
            
                9.10
             |                                 
            
                2,500
             |  
            
                 
             |                                                              
             
    
         
    
    
 |