| 
                 
                    Closing price on 7/18/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    22.30 | 
                 
                
                    | High | 
                    22.80 | 
                 
                
                    | Low | 
                    22.30 | 
                     
                
                    | Volume | 
                    4,420 | 
                                 
                
                    | Split-adjusted Price | 
                    3.41 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
ACC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                7/18/2012
             | 
            
                -0.20 / -0.87%
             |             
            
                22.30
             |           
            
                22.80
             |               
            
                22.30
             |                           
            
                22.70
             | 
            
                22.70
             |                     
            
                3.41
             |                                 
            
                4,420
             |            
            
                 
             |                                       
         
    
        
            | 
                7/17/2012
             | 
            
                +0.60 / +2.69%
             |             
            
                22.00
             |           
            
                22.90
             |               
            
                21.90
             |                           
            
                22.90
             | 
            
                22.90
             |                     
            
                3.44
             |                                 
            
                16,990
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/16/2012
             | 
            
                -0.20 / -0.89%
             |             
            
                22.40
             |           
            
                22.40
             |               
            
                22.10
             |                           
            
                22.30
             | 
            
                22.30
             |                     
            
                3.35
             |                                 
            
                19,570
             |            
            
                 
             |                                       
         
    
        
            | 
                7/13/2012
             | 
            
                +0.10 / +0.45%
             |             
            
                22.50
             |           
            
                22.60
             |               
            
                22.50
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                3.38
             |                                 
            
                6,930
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/12/2012
             | 
            
                0.00 / 0.00%
             |             
            
                22.50
             |           
            
                22.50
             |               
            
                21.90
             |                           
            
                22.40
             | 
            
                22.40
             |                     
            
                3.37
             |                                 
            
                2,670
             |            
            
                 
             |                                       
         
    
        
            | 
                7/11/2012
             | 
            
                +0.20 / +0.90%
             |             
            
                22.60
             |           
            
                22.60
             |               
            
                21.90
             |                           
            
                22.40
             | 
            
                22.40
             |                     
            
                3.37
             |                                 
            
                8,810
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/10/2012
             | 
            
                -0.30 / -1.33%
             |             
            
                22.00
             |           
            
                22.20
             |               
            
                21.70
             |                           
            
                22.20
             | 
            
                22.20
             |                     
            
                3.34
             |                                 
            
                22,580
             |            
            
                 
             |                                       
         
    
        
            | 
                7/9/2012
             | 
            
                -0.20 / -0.88%
             |             
            
                22.90
             |           
            
                22.90
             |               
            
                21.80
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                3.38
             |                                 
            
                2,590
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/6/2012
             | 
            
                0.00 / 0.00%
             |             
            
                22.60
             |           
            
                22.70
             |               
            
                22.50
             |                           
            
                22.70
             | 
            
                22.70
             |                     
            
                3.41
             |                                 
            
                5,360
             |            
            
                 
             |                                       
         
    
        
            | 
                7/5/2012
             | 
            
                0.00 / 0.00%
             |             
            
                22.70
             |           
            
                22.70
             |               
            
                22.70
             |                           
            
                22.70
             | 
            
                22.70
             |                     
            
                3.41
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/4/2012
             | 
            
                0.00 / 0.00%
             |             
            
                22.70
             |           
            
                22.70
             |               
            
                22.70
             |                           
            
                22.70
             | 
            
                22.70
             |                     
            
                3.41
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                7/3/2012
             | 
            
                +0.50 / +2.25%
             |             
            
                22.20
             |           
            
                22.70
             |               
            
                22.00
             |                           
            
                22.70
             | 
            
                22.70
             |                     
            
                3.41
             |                                 
            
                3,820
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/2/2012
             | 
            
                -0.60 / -2.63%
             |             
            
                22.00
             |           
            
                22.20
             |               
            
                22.00
             |                           
            
                22.20
             | 
            
                22.20
             |                     
            
                3.34
             |                                 
            
                7,520
             |            
            
                 
             |                                       
         
    
        
            | 
                6/29/2012
             | 
            
                +0.30 / +1.33%
             |             
            
                22.90
             |           
            
                22.90
             |               
            
                22.50
             |                           
            
                22.80
             | 
            
                22.80
             |                     
            
                3.43
             |                                 
            
                620
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/28/2012
             | 
            
                +0.10 / +0.45%
             |             
            
                22.50
             |           
            
                22.50
             |               
            
                22.40
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                3.38
             |                                 
            
                12,740
             |            
            
                 
             |                                       
         
    
        
            | 
                6/27/2012
             | 
            
                +0.10 / +0.45%
             |             
            
                22.90
             |           
            
                23.20
             |               
            
                22.40
             |                           
            
                22.40
             | 
            
                22.40
             |                     
            
                3.37
             |                                 
            
                29,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/26/2012
             | 
            
                -0.20 / -0.89%
             |             
            
                22.50
             |           
            
                22.60
             |               
            
                22.30
             |                           
            
                22.30
             | 
            
                22.30
             |                     
            
                3.35
             |                                 
            
                18,370
             |            
            
                 
             |                                       
         
    
        
            | 
                6/25/2012
             | 
            
                0.00 / 0.00%
             |             
            
                22.10
             |           
            
                23.00
             |               
            
                22.10
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                3.38
             |                                 
            
                21,040
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/22/2012
             | 
            
                -0.70 / -3.02%
             |             
            
                22.50
             |           
            
                22.50
             |               
            
                22.50
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                3.38
             |                                 
            
                1,050
             |            
            
                 
             |                                       
         
    
        
            | 
                6/21/2012
             | 
            
                +0.20 / +0.87%
             |             
            
                23.00
             |           
            
                23.20
             |               
            
                22.90
             |                           
            
                23.20
             | 
            
                23.20
             |                     
            
                3.49
             |                                 
            
                7,440
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/20/2012
             | 
            
                +0.30 / +1.32%
             |             
            
                22.70
             |           
            
                23.00
             |               
            
                22.70
             |                           
            
                23.00
             | 
            
                23.00
             |                     
            
                3.46
             |                                 
            
                22,700
             |            
            
                 
             |                                       
         
    
        
            | 
                6/19/2012
             | 
            
                -0.30 / -1.30%
             |             
            
                22.90
             |           
            
                23.00
             |               
            
                22.70
             |                           
            
                22.70
             | 
            
                22.70
             |                     
            
                3.41
             |                                 
            
                11,340
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/18/2012
             | 
            
                +0.10 / +0.44%
             |             
            
                23.30
             |           
            
                23.30
             |               
            
                22.90
             |                           
            
                23.00
             | 
            
                23.00
             |                     
            
                3.46
             |                                 
            
                10,100
             |            
            
                 
             |                                       
         
    
        
            | 
                6/15/2012
             | 
            
                0.00 / 0.00%
             |             
            
                22.90
             |           
            
                23.10
             |               
            
                22.80
             |                           
            
                22.90
             | 
            
                22.90
             |                     
            
                3.44
             |                                 
            
                20,010
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/14/2012
             | 
            
                +0.20 / +0.88%
             |             
            
                22.70
             |           
            
                22.90
             |               
            
                22.50
             |                           
            
                22.90
             | 
            
                22.90
             |                     
            
                3.44
             |                                 
            
                1,130
             |            
            
                 
             |                                       
         
    
        
            | 
                6/13/2012
             | 
            
                +0.20 / +0.89%
             |             
            
                22.50
             |           
            
                23.00
             |               
            
                22.50
             |                           
            
                22.70
             | 
            
                22.70
             |                     
            
                3.41
             |                                 
            
                10,860
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/12/2012
             | 
            
                -0.10 / -0.44%
             |             
            
                23.40
             |           
            
                23.40
             |               
            
                22.50
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                3.38
             |                                 
            
                32,930
             |            
            
                 
             |                                       
         
    
        
            | 
                6/11/2012
             | 
            
                0.00 / 0.00%
             |             
            
                23.20
             |           
            
                23.20
             |               
            
                22.60
             |                           
            
                22.60
             | 
            
                22.60
             |                     
            
                3.40
             |                                 
            
                4,260
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/8/2012
             | 
            
                0.00 / 0.00%
             |             
            
                22.60
             |           
            
                23.70
             |               
            
                22.60
             |                           
            
                22.60
             | 
            
                22.60
             |                     
            
                3.40
             |                                 
            
                50,240
             |            
            
                 
             |                                       
         
    
        
            | 
                6/7/2012
             | 
            
                +0.40 / +1.80%
             |             
            
                22.20
             |           
            
                23.10
             |               
            
                22.20
             |                           
            
                22.60
             | 
            
                22.60
             |                     
            
                3.40
             |                                 
            
                5,970
             |  
            
                 
             |                                                              
             
    
         
    
    
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