| 
                 
                    Closing price on 4/26/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    26.00 | 
                 
                
                    | High | 
                    26.00 | 
                 
                
                    | Low | 
                    25.50 | 
                     
                
                    | Volume | 
                    1,070 | 
                                 
                
                    | Split-adjusted Price | 
                    3.30 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
ACC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                4/26/2012
             | 
            
                +0.30 / +1.19%
             |             
            
                26.00
             |           
            
                26.00
             |               
            
                25.50
             |                           
            
                25.50
             | 
            
                25.50
             |                     
            
                3.30
             |                                 
            
                1,070
             |            
            
                 
             |                                       
         
    
        
            | 
                4/25/2012
             | 
            
                +1.20 / +5.00%
             |             
            
                25.00
             |           
            
                25.20
             |               
            
                25.00
             |                           
            
                25.20
             | 
            
                25.20
             |                     
            
                3.27
             |                                 
            
                13,070
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/24/2012
             | 
            
                +0.80 / +3.45%
             |             
            
                24.00
             |           
            
                24.00
             |               
            
                24.00
             |                           
            
                24.00
             | 
            
                24.00
             |                     
            
                3.11
             |                                 
            
                1,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/23/2012
             | 
            
                -0.50 / -2.11%
             |             
            
                23.00
             |           
            
                24.50
             |               
            
                22.90
             |                           
            
                23.20
             | 
            
                23.20
             |                     
            
                3.01
             |                                 
            
                11,340
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/20/2012
             | 
            
                -1.20 / -4.82%
             |             
            
                24.10
             |           
            
                24.90
             |               
            
                23.70
             |                           
            
                23.70
             | 
            
                23.70
             |                     
            
                3.07
             |                                 
            
                6,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2012
             | 
            
                +0.90 / +3.75%
             |             
            
                24.00
             |           
            
                25.20
             |               
            
                23.00
             |                           
            
                24.90
             | 
            
                24.90
             |                     
            
                3.23
             |                                 
            
                20,650
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/18/2012
             | 
            
                +0.90 / +3.90%
             |             
            
                23.10
             |           
            
                24.00
             |               
            
                23.10
             |                           
            
                24.00
             | 
            
                24.00
             |                     
            
                3.11
             |                                 
            
                9,030
             |            
            
                 
             |                                       
         
    
        
            | 
                4/17/2012
             | 
            
                +0.20 / +0.87%
             |             
            
                23.20
             |           
            
                23.50
             |               
            
                23.00
             |                           
            
                23.10
             | 
            
                23.10
             |                     
            
                2.99
             |                                 
            
                17,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/16/2012
             | 
            
                +0.90 / +4.09%
             |             
            
                22.00
             |           
            
                23.10
             |               
            
                22.00
             |                           
            
                22.90
             | 
            
                22.90
             |                     
            
                2.97
             |                                 
            
                10,600
             |            
            
                 
             |                                       
         
    
        
            | 
                4/13/2012
             | 
            
                0.00 / 0.00%
             |             
            
                22.00
             |           
            
                22.60
             |               
            
                20.90
             |                           
            
                22.00
             | 
            
                22.00
             |                     
            
                2.85
             |                                 
            
                41,170
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/12/2012
             | 
            
                +0.70 / +3.29%
             |             
            
                21.50
             |           
            
                22.30
             |               
            
                21.50
             |                           
            
                22.00
             | 
            
                22.00
             |                     
            
                2.85
             |                                 
            
                54,760
             |            
            
                 
             |                                       
         
    
        
            | 
                4/11/2012
             | 
            
                +0.40 / +1.91%
             |             
            
                21.50
             |           
            
                21.50
             |               
            
                21.20
             |                           
            
                21.30
             | 
            
                21.30
             |                     
            
                2.76
             |                                 
            
                3,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/10/2012
             | 
            
                +0.60 / +2.96%
             |             
            
                21.00
             |           
            
                21.00
             |               
            
                20.90
             |                           
            
                20.90
             | 
            
                20.90
             |                     
            
                2.71
             |                                 
            
                880
             |            
            
                 
             |                                       
         
    
        
            | 
                4/9/2012
             | 
            
                +0.70 / +3.57%
             |             
            
                19.30
             |           
            
                20.30
             |               
            
                19.30
             |                           
            
                20.30
             | 
            
                20.30
             |                     
            
                2.63
             |                                 
            
                3,050
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/6/2012
             | 
            
                +0.90 / +4.81%
             |             
            
                19.50
             |           
            
                19.60
             |               
            
                19.00
             |                           
            
                19.60
             | 
            
                19.60
             |                     
            
                2.54
             |                                 
            
                12,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/5/2012
             | 
            
                -0.50 / -2.60%
             |             
            
                19.10
             |           
            
                19.60
             |               
            
                18.70
             |                           
            
                18.70
             | 
            
                18.70
             |                     
            
                2.42
             |                                 
            
                42,860
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/4/2012
             | 
            
                +0.20 / +1.05%
             |             
            
                19.00
             |           
            
                19.20
             |               
            
                19.00
             |                           
            
                19.20
             | 
            
                19.20
             |                     
            
                2.49
             |                                 
            
                6,200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/3/2012
             | 
            
                +0.30 / +1.60%
             |             
            
                19.00
             |           
            
                19.00
             |               
            
                19.00
             |                           
            
                19.00
             | 
            
                19.00
             |                     
            
                2.46
             |                                 
            
                2,120
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/30/2012
             | 
            
                -0.10 / -0.53%
             |             
            
                18.70
             |           
            
                18.80
             |               
            
                18.70
             |                           
            
                18.70
             | 
            
                18.70
             |                     
            
                2.42
             |                                 
            
                2,060
             |            
            
                 
             |                                       
         
    
        
            | 
                3/29/2012
             | 
            
                +0.10 / +0.53%
             |             
            
                18.70
             |           
            
                18.80
             |               
            
                18.70
             |                           
            
                18.80
             | 
            
                18.80
             |                     
            
                2.44
             |                                 
            
                3,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/28/2012
             | 
            
                -0.30 / -1.58%
             |             
            
                18.80
             |           
            
                18.80
             |               
            
                18.70
             |                           
            
                18.70
             | 
            
                18.70
             |                     
            
                2.42
             |                                 
            
                300
             |            
            
                 
             |                                       
         
    
        
            | 
                3/27/2012
             | 
            
                -1.00 / -5.00%
             |             
            
                19.60
             |           
            
                19.60
             |               
            
                19.00
             |                           
            
                19.00
             | 
            
                19.00
             |                     
            
                2.46
             |                                 
            
                8,230
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/26/2012
             | 
            
                0.00 / 0.00%
             |             
            
                20.00
             |           
            
                20.00
             |               
            
                20.00
             |                           
            
                20.00
             | 
            
                20.00
             |                     
            
                2.59
             |                                 
            
                10
             |            
            
                 
             |                                       
         
    
        
            | 
                3/23/2012
             | 
            
                +0.10 / +0.50%
             |             
            
                20.00
             |           
            
                20.00
             |               
            
                20.00
             |                           
            
                20.00
             | 
            
                20.00
             |                     
            
                2.59
             |                                 
            
                1,010
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/22/2012
             | 
            
                0.00 / 0.00%
             |             
            
                20.70
             |           
            
                20.80
             |               
            
                19.90
             |                           
            
                19.90
             | 
            
                19.90
             |                     
            
                2.58
             |                                 
            
                1,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/21/2012
             | 
            
                +0.90 / +4.74%
             |             
            
                19.00
             |           
            
                19.90
             |               
            
                19.00
             |                           
            
                19.90
             | 
            
                19.90
             |                     
            
                2.58
             |                                 
            
                3,410
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/20/2012
             | 
            
                -0.40 / -2.06%
             |             
            
                19.40
             |           
            
                19.40
             |               
            
                18.50
             |                           
            
                19.00
             | 
            
                19.00
             |                     
            
                2.46
             |                                 
            
                20,700
             |            
            
                 
             |                                       
         
    
        
            | 
                3/19/2012
             | 
            
                -1.00 / -4.90%
             |             
            
                20.00
             |           
            
                20.30
             |               
            
                19.40
             |                           
            
                19.40
             | 
            
                19.40
             |                     
            
                2.51
             |                                 
            
                7,740
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/16/2012
             | 
            
                +0.90 / +4.62%
             |             
            
                19.30
             |           
            
                20.40
             |               
            
                19.20
             |                           
            
                20.40
             | 
            
                20.40
             |                     
            
                2.64
             |                                 
            
                1,450
             |            
            
                 
             |                                       
         
    
        
            | 
                3/15/2012
             | 
            
                +0.20 / +1.04%
             |             
            
                19.00
             |           
            
                19.50
             |               
            
                18.80
             |                           
            
                19.50
             | 
            
                19.50
             |                     
            
                2.53
             |                                 
            
                16,910
             |  
            
                 
             |                                                              
             
    
         
    
    
 |