| 
                 
                    Closing price on 5/18/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    38.30 | 
                 
                
                    | High | 
                    38.30 | 
                 
                
                    | Low | 
                    37.80 | 
                     
                
                    | Volume | 
                    17,330 | 
                                 
                
                    | Split-adjusted Price | 
                    15.29 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
CTD Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/18/2012
             | 
            
                +0.30 / +0.79%
             |             
            
                38.30
             |           
            
                38.30
             |               
            
                37.80
             |                           
            
                38.30
             | 
            
                38.30
             |                     
            
                15.29
             |                                 
            
                17,330
             |            
            
                 
             |                                       
         
    
        
            | 
                5/17/2012
             | 
            
                -1.20 / -3.06%
             |             
            
                39.20
             |           
            
                39.20
             |               
            
                38.00
             |                           
            
                38.00
             | 
            
                38.00
             |                     
            
                15.17
             |                                 
            
                1,140
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/16/2012
             | 
            
                +1.50 / +3.98%
             |             
            
                37.90
             |           
            
                39.20
             |               
            
                37.60
             |                           
            
                39.20
             | 
            
                39.20
             |                     
            
                15.65
             |                                 
            
                63,750
             |            
            
                 
             |                                       
         
    
        
            | 
                5/15/2012
             | 
            
                0.00 / 0.00%
             |             
            
                39.00
             |           
            
                39.00
             |               
            
                37.70
             |                           
            
                37.70
             | 
            
                37.70
             |                     
            
                15.05
             |                                 
            
                16,760
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/14/2012
             | 
            
                -1.60 / -4.07%
             |             
            
                38.60
             |           
            
                38.60
             |               
            
                37.60
             |                           
            
                37.70
             | 
            
                37.70
             |                     
            
                15.05
             |                                 
            
                16,510
             |            
            
                 
             |                                       
         
    
        
            | 
                5/11/2012
             | 
            
                -1.10 / -2.72%
             |             
            
                39.30
             |           
            
                39.50
             |               
            
                39.30
             |                           
            
                39.30
             | 
            
                39.30
             |                     
            
                15.69
             |                                 
            
                8,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/10/2012
             | 
            
                -1.50 / -3.58%
             |             
            
                41.90
             |           
            
                41.90
             |               
            
                39.90
             |                           
            
                40.40
             | 
            
                40.40
             |                     
            
                16.13
             |                                 
            
                28,570
             |            
            
                 
             |                                       
         
    
        
            | 
                5/9/2012
             | 
            
                +0.30 / +0.72%
             |             
            
                41.00
             |           
            
                41.90
             |               
            
                41.00
             |                           
            
                41.90
             | 
            
                41.90
             |                     
            
                16.73
             |                                 
            
                8,030
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/8/2012
             | 
            
                -0.90 / -2.12%
             |             
            
                41.00
             |           
            
                41.90
             |               
            
                41.00
             |                           
            
                41.60
             | 
            
                41.60
             |                     
            
                16.61
             |                                 
            
                11,450
             |            
            
                 
             |                                       
         
    
        
            | 
                5/7/2012
             | 
            
                +0.70 / +1.67%
             |             
            
                42.50
             |           
            
                42.80
             |               
            
                42.50
             |                           
            
                42.50
             | 
            
                42.50
             |                     
            
                16.97
             |                                 
            
                16,620
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/4/2012
             | 
            
                +1.40 / +3.47%
             |             
            
                40.00
             |           
            
                41.80
             |               
            
                40.00
             |                           
            
                41.80
             | 
            
                41.80
             |                     
            
                16.69
             |                                 
            
                46,850
             |            
            
                 
             |                                       
         
    
        
            | 
                5/3/2012
             | 
            
                +0.40 / +1.00%
             |             
            
                40.00
             |           
            
                40.70
             |               
            
                39.00
             |                           
            
                40.40
             | 
            
                40.40
             |                     
            
                16.13
             |                                 
            
                11,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/2/2012
             | 
            
                +0.80 / +2.04%
             |             
            
                39.90
             |           
            
                40.80
             |               
            
                39.00
             |                           
            
                40.00
             | 
            
                40.00
             |                     
            
                15.97
             |                                 
            
                21,240
             |            
            
                 
             |                                       
         
    
        
            | 
                4/27/2012
             | 
            
                -0.10 / -0.25%
             |             
            
                39.40
             |           
            
                39.50
             |               
            
                39.20
             |                           
            
                39.20
             | 
            
                39.20
             |                     
            
                15.65
             |                                 
            
                20,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/26/2012
             | 
            
                +1.80 / +4.80%
             |             
            
                38.00
             |           
            
                39.30
             |               
            
                38.00
             |                           
            
                39.30
             | 
            
                39.30
             |                     
            
                15.69
             |                                 
            
                69,640
             |            
            
                 
             |                                       
         
    
        
            | 
                4/25/2012
             | 
            
                -0.50 / -1.32%
             |             
            
                37.50
             |           
            
                38.00
             |               
            
                37.50
             |                           
            
                37.50
             | 
            
                37.50
             |                     
            
                14.97
             |                                 
            
                15,530
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/24/2012
             | 
            
                +0.50 / +1.33%
             |             
            
                37.90
             |           
            
                38.00
             |               
            
                36.30
             |                           
            
                38.00
             | 
            
                38.00
             |                     
            
                15.17
             |                                 
            
                6,170
             |            
            
                 
             |                                       
         
    
        
            | 
                4/23/2012
             | 
            
                -0.80 / -2.09%
             |             
            
                38.00
             |           
            
                38.30
             |               
            
                37.50
             |                           
            
                37.50
             | 
            
                37.50
             |                     
            
                14.97
             |                                 
            
                7,090
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/20/2012
             | 
            
                0.00 / 0.00%
             |             
            
                38.00
             |           
            
                38.30
             |               
            
                38.00
             |                           
            
                38.30
             | 
            
                38.30
             |                     
            
                15.29
             |                                 
            
                3,620
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2012
             | 
            
                -1.70 / -4.25%
             |             
            
                36.50
             |           
            
                38.50
             |               
            
                36.50
             |                           
            
                38.30
             | 
            
                38.30
             |                     
            
                15.29
             |                                 
            
                12,410
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/18/2012
             | 
            
                -2.00 / -4.76%
             |             
            
                42.00
             |           
            
                42.00
             |               
            
                39.90
             |                           
            
                40.00
             | 
            
                40.00
             |                     
            
                15.17
             |                                 
            
                3,900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/17/2012
             | 
            
                0.00 / 0.00%
             |             
            
                42.00
             |           
            
                43.00
             |               
            
                40.00
             |                           
            
                42.00
             | 
            
                42.00
             |                     
            
                15.93
             |                                 
            
                116,340
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/16/2012
             | 
            
                0.00 / 0.00%
             |             
            
                42.00
             |           
            
                42.00
             |               
            
                41.50
             |                           
            
                42.00
             | 
            
                42.00
             |                     
            
                15.93
             |                                 
            
                258,150
             |            
            
                 
             |                                       
         
    
        
            | 
                4/13/2012
             | 
            
                +1.80 / +4.48%
             |             
            
                40.20
             |           
            
                42.00
             |               
            
                40.20
             |                           
            
                42.00
             | 
            
                42.00
             |                     
            
                15.93
             |                                 
            
                21,530
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/12/2012
             | 
            
                +1.60 / +4.15%
             |             
            
                39.70
             |           
            
                40.50
             |               
            
                38.60
             |                           
            
                40.20
             | 
            
                40.20
             |                     
            
                15.25
             |                                 
            
                72,930
             |            
            
                 
             |                                       
         
    
        
            | 
                4/11/2012
             | 
            
                +0.40 / +1.05%
             |             
            
                39.70
             |           
            
                39.70
             |               
            
                38.60
             |                           
            
                38.60
             | 
            
                38.60
             |                     
            
                14.64
             |                                 
            
                7,570
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/10/2012
             | 
            
                -0.30 / -0.78%
             |             
            
                38.00
             |           
            
                38.50
             |               
            
                38.00
             |                           
            
                38.20
             | 
            
                38.20
             |                     
            
                14.49
             |                                 
            
                312,180
             |            
            
                 
             |                                       
         
    
        
            | 
                4/9/2012
             | 
            
                +0.90 / +2.39%
             |             
            
                38.40
             |           
            
                38.50
             |               
            
                37.70
             |                           
            
                38.50
             | 
            
                38.50
             |                     
            
                14.60
             |                                 
            
                21,220
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/6/2012
             | 
            
                -0.30 / -0.79%
             |             
            
                39.00
             |           
            
                39.00
             |               
            
                37.60
             |                           
            
                37.60
             | 
            
                37.60
             |                     
            
                14.26
             |                                 
            
                14,310
             |            
            
                 
             |                                       
         
    
        
            | 
                4/5/2012
             | 
            
                +0.40 / +1.07%
             |             
            
                37.60
             |           
            
                37.90
             |               
            
                37.60
             |                           
            
                37.90
             | 
            
                37.90
             |                     
            
                14.37
             |                                 
            
                11,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |