| 
                 
                    Closing price on 2/3/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    20.50 | 
                 
                
                    | High | 
                    20.50 | 
                 
                
                    | Low | 
                    20.50 | 
                     
                
                    | Volume | 
                    0 | 
                                 
                
                    | Split-adjusted Price | 
                    2.66 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
ACC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                2/3/2012
             | 
            
                0.00 / 0.00%
             |             
            
                20.50
             |           
            
                20.50
             |               
            
                20.50
             |                           
            
                20.50
             | 
            
                20.50
             |                     
            
                2.66
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                2/2/2012
             | 
            
                0.00 / 0.00%
             |             
            
                20.50
             |           
            
                20.50
             |               
            
                20.50
             |                           
            
                20.50
             | 
            
                20.50
             |                     
            
                2.66
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/1/2012
             | 
            
                +0.60 / +3.02%
             |             
            
                20.50
             |           
            
                20.50
             |               
            
                20.40
             |                           
            
                20.50
             | 
            
                20.50
             |                     
            
                2.66
             |                                 
            
                110
             |            
            
                 
             |                                       
         
    
        
            | 
                1/31/2012
             | 
            
                0.00 / 0.00%
             |             
            
                19.90
             |           
            
                19.90
             |               
            
                19.90
             |                           
            
                19.90
             | 
            
                19.90
             |                     
            
                2.58
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/30/2012
             | 
            
                0.00 / 0.00%
             |             
            
                19.90
             |           
            
                19.90
             |               
            
                19.90
             |                           
            
                19.90
             | 
            
                19.90
             |                     
            
                2.58
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                1/20/2012
             | 
            
                +0.40 / +2.05%
             |             
            
                19.90
             |           
            
                19.90
             |               
            
                19.90
             |                           
            
                19.90
             | 
            
                19.90
             |                     
            
                2.58
             |                                 
            
                40
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/19/2012
             | 
            
                +0.40 / +2.09%
             |             
            
                19.50
             |           
            
                19.50
             |               
            
                19.50
             |                           
            
                19.50
             | 
            
                19.50
             |                     
            
                2.53
             |                                 
            
                10
             |            
            
                 
             |                                       
         
    
        
            | 
                1/18/2012
             | 
            
                0.00 / 0.00%
             |             
            
                19.10
             |           
            
                19.10
             |               
            
                19.10
             |                           
            
                19.10
             | 
            
                19.10
             |                     
            
                2.47
             |                                 
            
                360
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/17/2012
             | 
            
                +0.10 / +0.53%
             |             
            
                19.00
             |           
            
                19.10
             |               
            
                19.00
             |                           
            
                19.10
             | 
            
                19.10
             |                     
            
                2.47
             |                                 
            
                4,830
             |            
            
                 
             |                                       
         
    
        
            | 
                1/16/2012
             | 
            
                +0.30 / +1.60%
             |             
            
                19.00
             |           
            
                19.00
             |               
            
                19.00
             |                           
            
                19.00
             | 
            
                19.00
             |                     
            
                2.46
             |                                 
            
                10
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/13/2012
             | 
            
                +0.50 / +2.75%
             |             
            
                18.80
             |           
            
                18.80
             |               
            
                18.00
             |                           
            
                18.70
             | 
            
                18.70
             |                     
            
                2.42
             |                                 
            
                430
             |            
            
                 
             |                                       
         
    
        
            | 
                1/12/2012
             | 
            
                +0.20 / +1.11%
             |             
            
                18.20
             |           
            
                18.20
             |               
            
                18.20
             |                           
            
                18.20
             | 
            
                18.20
             |                     
            
                2.36
             |                                 
            
                30
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/11/2012
             | 
            
                0.00 / 0.00%
             |             
            
                18.00
             |           
            
                18.00
             |               
            
                18.00
             |                           
            
                18.00
             | 
            
                18.00
             |                     
            
                2.33
             |                                 
            
                4,780
             |            
            
                 
             |                                       
         
    
        
            | 
                1/10/2012
             | 
            
                +0.10 / +0.56%
             |             
            
                18.00
             |           
            
                18.00
             |               
            
                18.00
             |                           
            
                18.00
             | 
            
                18.00
             |                     
            
                2.33
             |                                 
            
                4,950
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/9/2012
             | 
            
                0.00 / 0.00%
             |             
            
                17.90
             |           
            
                17.90
             |               
            
                17.90
             |                           
            
                17.90
             | 
            
                17.90
             |                     
            
                2.32
             |                                 
            
                50
             |            
            
                 
             |                                       
         
    
        
            | 
                1/6/2012
             | 
            
                +0.80 / +4.68%
             |             
            
                17.90
             |           
            
                17.90
             |               
            
                17.90
             |                           
            
                17.90
             | 
            
                17.90
             |                     
            
                2.32
             |                                 
            
                10
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/5/2012
             | 
            
                -0.80 / -4.47%
             |             
            
                17.20
             |           
            
                17.20
             |               
            
                17.10
             |                           
            
                17.10
             | 
            
                17.10
             |                     
            
                2.22
             |                                 
            
                12,480
             |            
            
                 
             |                                       
         
    
        
            | 
                1/4/2012
             | 
            
                +0.10 / +0.56%
             |             
            
                18.00
             |           
            
                18.00
             |               
            
                17.80
             |                           
            
                17.90
             | 
            
                17.90
             |                     
            
                2.32
             |                                 
            
                11,950
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/3/2012
             | 
            
                -0.20 / -1.11%
             |             
            
                17.60
             |           
            
                17.80
             |               
            
                17.60
             |                           
            
                17.80
             | 
            
                17.80
             |                     
            
                2.31
             |                                 
            
                1,660
             |            
            
                 
             |                                       
         
    
        
            | 
                12/30/2011
             | 
            
                -0.50 / -2.70%
             |             
            
                18.10
             |           
            
                18.10
             |               
            
                18.00
             |                           
            
                18.00
             | 
            
                18.00
             |                     
            
                2.33
             |                                 
            
                6,010
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/29/2011
             | 
            
                +0.50 / +2.78%
             |             
            
                18.50
             |           
            
                18.50
             |               
            
                18.50
             |                           
            
                18.50
             | 
            
                18.50
             |                     
            
                2.40
             |                                 
            
                20,200
             |            
            
                 
             |                                       
         
    
        
            | 
                12/28/2011
             | 
            
                -0.10 / -0.55%
             |             
            
                18.00
             |           
            
                18.00
             |               
            
                18.00
             |                           
            
                18.00
             | 
            
                18.00
             |                     
            
                2.33
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/27/2011
             | 
            
                -0.90 / -4.74%
             |             
            
                18.10
             |           
            
                19.20
             |               
            
                18.10
             |                           
            
                18.10
             | 
            
                18.10
             |                     
            
                2.35
             |                                 
            
                22,130
             |            
            
                 
             |                                       
         
    
        
            | 
                12/26/2011
             | 
            
                -0.50 / -2.56%
             |             
            
                19.00
             |           
            
                19.00
             |               
            
                19.00
             |                           
            
                19.00
             | 
            
                19.00
             |                     
            
                2.46
             |                                 
            
                80
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/23/2011
             | 
            
                0.00 / 0.00%
             |             
            
                19.50
             |           
            
                19.50
             |               
            
                19.50
             |                           
            
                19.50
             | 
            
                19.50
             |                     
            
                2.53
             |                                 
            
                10,000
             |            
            
                 
             |                                       
         
    
        
            | 
                12/22/2011
             | 
            
                0.00 / 0.00%
             |             
            
                19.50
             |           
            
                19.50
             |               
            
                19.50
             |                           
            
                19.50
             | 
            
                19.50
             |                     
            
                2.53
             |                                 
            
                19,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/21/2011
             | 
            
                +0.50 / +2.63%
             |             
            
                19.00
             |           
            
                19.50
             |               
            
                19.00
             |                           
            
                19.50
             | 
            
                19.50
             |                     
            
                2.53
             |                                 
            
                32,760
             |            
            
                 
             |                                       
         
    
        
            | 
                12/20/2011
             | 
            
                -0.40 / -2.06%
             |             
            
                19.40
             |           
            
                19.40
             |               
            
                19.00
             |                           
            
                19.00
             | 
            
                19.00
             |                     
            
                2.46
             |                                 
            
                30,510
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/19/2011
             | 
            
                +0.90 / +4.86%
             |             
            
                18.50
             |           
            
                19.40
             |               
            
                18.50
             |                           
            
                19.40
             | 
            
                19.40
             |                     
            
                2.51
             |                                 
            
                34,630
             |            
            
                 
             |                                       
         
    
        
            | 
                12/16/2011
             | 
            
                0.00 / 0.00%
             |             
            
                18.50
             |           
            
                18.50
             |               
            
                18.50
             |                           
            
                18.50
             | 
            
                18.50
             |                     
            
                2.40
             |                                 
            
                8,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |