| 
                 
                    Closing price on 6/14/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    12.50 | 
                 
                
                    | High | 
                    12.60 | 
                 
                
                    | Low | 
                    12.30 | 
                     
                
                    | Volume | 
                    23,400 | 
                                 
                
                    | Split-adjusted Price | 
                    6.33 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
CMS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/14/2012
             | 
            
                -0.50 / -3.88%
             |             
            
                12.50
             |           
            
                12.60
             |               
            
                12.30
             |                           
            
                12.40
             | 
            
                12.40
             |                     
            
                6.33
             |                                 
            
                23,400
             |            
            
                 
             |                                       
         
    
        
            | 
                6/13/2012
             | 
            
                -2.10 / -14.00%
             |             
            
                14.00
             |           
            
                14.00
             |               
            
                12.40
             |                           
            
                12.90
             | 
            
                12.90
             |                     
            
                6.59
             |                                 
            
                54,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/12/2012
             | 
            
                -0.10 / -0.66%
             |             
            
                15.00
             |           
            
                15.00
             |               
            
                14.00
             |                           
            
                15.00
             | 
            
                15.00
             |                     
            
                6.89
             |                                 
            
                107,500
             |            
            
                 
             |                                       
         
    
        
            | 
                6/11/2012
             | 
            
                -0.60 / -3.82%
             |             
            
                14.80
             |           
            
                15.60
             |               
            
                14.70
             |                           
            
                15.10
             | 
            
                15.10
             |                     
            
                6.93
             |                                 
            
                87,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/8/2012
             | 
            
                0.00 / 0.00%
             |             
            
                15.70
             |           
            
                16.10
             |               
            
                14.70
             |                           
            
                15.70
             | 
            
                15.70
             |                     
            
                7.21
             |                                 
            
                95,600
             |            
            
                 
             |                                       
         
    
        
            | 
                6/7/2012
             | 
            
                +0.10 / +0.64%
             |             
            
                15.30
             |           
            
                15.80
             |               
            
                14.80
             |                           
            
                15.70
             | 
            
                15.70
             |                     
            
                7.21
             |                                 
            
                91,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/6/2012
             | 
            
                -0.40 / -2.50%
             |             
            
                16.00
             |           
            
                16.10
             |               
            
                15.20
             |                           
            
                15.60
             | 
            
                15.60
             |                     
            
                7.16
             |                                 
            
                105,300
             |            
            
                 
             |                                       
         
    
        
            | 
                6/5/2012
             | 
            
                0.00 / 0.00%
             |             
            
                16.00
             |           
            
                16.50
             |               
            
                15.40
             |                           
            
                16.00
             | 
            
                16.00
             |                     
            
                7.35
             |                                 
            
                82,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/4/2012
             | 
            
                +1.00 / +6.67%
             |             
            
                14.50
             |           
            
                16.00
             |               
            
                14.50
             |                           
            
                16.00
             | 
            
                16.00
             |                     
            
                7.35
             |                                 
            
                90,400
             |            
            
                 
             |                                       
         
    
        
            | 
                6/1/2012
             | 
            
                +0.90 / +6.38%
             |             
            
                14.20
             |           
            
                15.00
             |               
            
                14.00
             |                           
            
                15.00
             | 
            
                15.00
             |                     
            
                6.89
             |                                 
            
                96,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/31/2012
             | 
            
                -0.30 / -2.08%
             |             
            
                14.20
             |           
            
                14.20
             |               
            
                13.40
             |                           
            
                14.10
             | 
            
                14.10
             |                     
            
                6.47
             |                                 
            
                65,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/30/2012
             | 
            
                -0.30 / -2.04%
             |             
            
                14.00
             |           
            
                14.40
             |               
            
                13.70
             |                           
            
                14.40
             | 
            
                14.40
             |                     
            
                6.61
             |                                 
            
                55,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/29/2012
             | 
            
                0.00 / 0.00%
             |             
            
                14.70
             |           
            
                14.70
             |               
            
                13.70
             |                           
            
                14.70
             | 
            
                14.70
             |                     
            
                6.75
             |                                 
            
                90,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/28/2012
             | 
            
                -0.10 / -0.68%
             |             
            
                15.40
             |           
            
                15.40
             |               
            
                13.80
             |                           
            
                14.70
             | 
            
                14.70
             |                     
            
                6.75
             |                                 
            
                89,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/25/2012
             | 
            
                +0.80 / +5.71%
             |             
            
                14.20
             |           
            
                14.80
             |               
            
                13.80
             |                           
            
                14.80
             | 
            
                14.80
             |                     
            
                6.79
             |                                 
            
                65,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/24/2012
             | 
            
                -0.90 / -6.04%
             |             
            
                14.30
             |           
            
                15.00
             |               
            
                13.90
             |                           
            
                14.00
             | 
            
                14.00
             |                     
            
                6.43
             |                                 
            
                76,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/23/2012
             | 
            
                -0.70 / -4.49%
             |             
            
                16.20
             |           
            
                16.20
             |               
            
                14.50
             |                           
            
                14.90
             | 
            
                14.90
             |                     
            
                6.84
             |                                 
            
                82,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/22/2012
             | 
            
                -0.10 / -0.64%
             |             
            
                15.80
             |           
            
                15.80
             |               
            
                15.00
             |                           
            
                15.60
             | 
            
                15.60
             |                     
            
                7.16
             |                                 
            
                39,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/21/2012
             | 
            
                +0.30 / +1.95%
             |             
            
                15.40
             |           
            
                15.70
             |               
            
                15.10
             |                           
            
                15.70
             | 
            
                15.70
             |                     
            
                7.21
             |                                 
            
                68,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2012
             | 
            
                -0.40 / -2.53%
             |             
            
                15.40
             |           
            
                16.00
             |               
            
                15.00
             |                           
            
                15.40
             | 
            
                15.40
             |                     
            
                7.07
             |                                 
            
                57,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/17/2012
             | 
            
                +0.70 / +4.64%
             |             
            
                16.10
             |           
            
                16.10
             |               
            
                15.00
             |                           
            
                15.80
             | 
            
                15.80
             |                     
            
                7.25
             |                                 
            
                155,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2012
             | 
            
                +0.90 / +6.34%
             |             
            
                15.10
             |           
            
                15.10
             |               
            
                15.10
             |                           
            
                15.10
             | 
            
                15.10
             |                     
            
                6.93
             |                                 
            
                68,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/15/2012
             | 
            
                +0.90 / +6.77%
             |             
            
                14.20
             |           
            
                14.20
             |               
            
                14.20
             |                           
            
                14.20
             | 
            
                14.20
             |                     
            
                6.52
             |                                 
            
                75,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/14/2012
             | 
            
                +0.70 / +5.56%
             |             
            
                13.30
             |           
            
                13.30
             |               
            
                13.30
             |                           
            
                13.30
             | 
            
                13.30
             |                     
            
                6.11
             |                                 
            
                34,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/11/2012
             | 
            
                +0.10 / +0.80%
             |             
            
                12.40
             |           
            
                12.60
             |               
            
                12.10
             |                           
            
                12.60
             | 
            
                12.60
             |                     
            
                5.78
             |                                 
            
                85,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2012
             | 
            
                +0.50 / +4.17%
             |             
            
                12.50
             |           
            
                12.70
             |               
            
                12.20
             |                           
            
                12.50
             | 
            
                12.50
             |                     
            
                5.74
             |                                 
            
                104,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/9/2012
             | 
            
                +0.50 / +4.35%
             |             
            
                12.20
             |           
            
                12.20
             |               
            
                11.10
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                5.51
             |                                 
            
                58,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/8/2012
             | 
            
                +0.70 / +6.48%
             |             
            
                11.50
             |           
            
                11.50
             |               
            
                11.40
             |                           
            
                11.50
             | 
            
                11.50
             |                     
            
                5.28
             |                                 
            
                13,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/7/2012
             | 
            
                +0.70 / +6.93%
             |             
            
                10.20
             |           
            
                10.80
             |               
            
                10.20
             |                           
            
                10.80
             | 
            
                10.80
             |                     
            
                4.96
             |                                 
            
                65,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/4/2012
             | 
            
                +0.10 / +1.00%
             |             
            
                9.90
             |           
            
                10.30
             |               
            
                9.80
             |                           
            
                10.10
             | 
            
                10.10
             |                     
            
                4.64
             |                                 
            
                59,300
             |  
            
                 
             |                                                              
             
    
         
    
    
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