| 
                 
                    Closing price on 12/22/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    18.50 | 
                 
                
                    | High | 
                    18.70 | 
                 
                
                    | Low | 
                    18.10 | 
                     
                
                    | Volume | 
                    30,900 | 
                                 
                
                    | Split-adjusted Price | 
                    18.30 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
V15 Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                12/22/2010
             | 
            
                -0.60 / -3.17%
             |             
            
                18.50
             |           
            
                18.70
             |               
            
                18.10
             |                           
            
                18.30
             | 
            
                18.30
             |                     
            
                18.30
             |                                 
            
                30,900
             |            
            
                 
             |                                       
         
    
        
            | 
                12/21/2010
             | 
            
                +0.60 / +3.28%
             |             
            
                18.40
             |           
            
                19.00
             |               
            
                18.00
             |                           
            
                18.90
             | 
            
                18.90
             |                     
            
                18.90
             |                                 
            
                25,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/20/2010
             | 
            
                -1.70 / -8.50%
             |             
            
                19.50
             |           
            
                19.50
             |               
            
                18.30
             |                           
            
                18.30
             | 
            
                18.30
             |                     
            
                18.30
             |                                 
            
                96,400
             |            
            
                 
             |                                       
         
    
        
            | 
                12/17/2010
             | 
            
                +1.40 / +7.53%
             |             
            
                19.30
             |           
            
                20.00
             |               
            
                18.60
             |                           
            
                20.00
             | 
            
                18.60
             |                     
            
                20.00
             |                                 
            
                89,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/16/2010
             | 
            
                -1.00 / -5.10%
             |             
            
                19.60
             |           
            
                19.60
             |               
            
                18.60
             |                           
            
                18.60
             | 
            
                18.60
             |                     
            
                18.60
             |                                 
            
                77,300
             |            
            
                 
             |                                       
         
    
        
            | 
                12/15/2010
             | 
            
                -1.10 / -5.31%
             |             
            
                20.80
             |           
            
                20.80
             |               
            
                19.50
             |                           
            
                19.60
             | 
            
                19.60
             |                     
            
                19.60
             |                                 
            
                71,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/14/2010
             | 
            
                -1.50 / -6.76%
             |             
            
                21.20
             |           
            
                22.20
             |               
            
                20.70
             |                           
            
                20.70
             | 
            
                20.70
             |                     
            
                20.70
             |                                 
            
                140,600
             |            
            
                 
             |                                       
         
    
        
            | 
                12/13/2010
             | 
            
                +1.40 / +6.73%
             |             
            
                22.20
             |           
            
                22.20
             |               
            
                22.10
             |                           
            
                22.20
             | 
            
                22.20
             |                     
            
                22.20
             |                                 
            
                188,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/10/2010
             | 
            
                +0.70 / +3.48%
             |             
            
                20.70
             |           
            
                20.80
             |               
            
                20.50
             |                           
            
                20.80
             | 
            
                20.70
             |                     
            
                20.80
             |                                 
            
                57,300
             |            
            
                 
             |                                       
         
    
        
            | 
                12/9/2010
             | 
            
                +0.20 / +1.01%
             |             
            
                18.70
             |           
            
                21.20
             |               
            
                18.70
             |                           
            
                20.10
             | 
            
                20.10
             |                     
            
                20.10
             |                                 
            
                98,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/8/2010
             | 
            
                -1.20 / -5.69%
             |             
            
                21.00
             |           
            
                21.00
             |               
            
                19.90
             |                           
            
                19.90
             | 
            
                19.90
             |                     
            
                19.90
             |                                 
            
                118,200
             |            
            
                 
             |                                       
         
    
        
            | 
                12/7/2010
             | 
            
                -0.60 / -2.76%
             |             
            
                22.00
             |           
            
                22.10
             |               
            
                21.10
             |                           
            
                21.10
             | 
            
                21.10
             |                     
            
                21.10
             |                                 
            
                231,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/6/2010
             | 
            
                -0.90 / -3.98%
             |             
            
                23.50
             |           
            
                23.90
             |               
            
                21.40
             |                           
            
                21.70
             | 
            
                21.70
             |                     
            
                21.70
             |                                 
            
                110,700
             |            
            
                 
             |                                       
         
    
        
            | 
                12/3/2010
             | 
            
                +0.80 / +3.67%
             |             
            
                21.20
             |           
            
                22.60
             |               
            
                21.20
             |                           
            
                22.60
             | 
            
                21.80
             |                     
            
                22.60
             |                                 
            
                216,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/2/2010
             | 
            
                +1.40 / +6.86%
             |             
            
                22.00
             |           
            
                22.40
             |               
            
                20.20
             |                           
            
                21.80
             | 
            
                21.80
             |                     
            
                21.80
             |                                 
            
                209,300
             |            
            
                 
             |                                       
         
    
        
            | 
                12/1/2010
             | 
            
                +0.10 / +0.49%
             |             
            
                21.70
             |           
            
                21.70
             |               
            
                20.20
             |                           
            
                20.40
             | 
            
                20.40
             |                     
            
                20.40
             |                                 
            
                427,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/30/2010
             | 
            
                +1.10 / +5.73%
             |             
            
                20.30
             |           
            
                20.30
             |               
            
                20.30
             |                           
            
                20.30
             | 
            
                20.30
             |                     
            
                20.30
             |                                 
            
                13,200
             |            
            
                 
             |                                       
         
    
        
            | 
                11/29/2010
             | 
            
                +1.20 / +6.67%
             |             
            
                18.70
             |           
            
                19.20
             |               
            
                18.00
             |                           
            
                19.20
             | 
            
                19.20
             |                     
            
                19.20
             |                                 
            
                122,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/26/2010
             | 
            
                +1.00 / +5.88%
             |             
            
                16.50
             |           
            
                18.00
             |               
            
                16.50
             |                           
            
                18.00
             | 
            
                17.00
             |                     
            
                18.00
             |                                 
            
                247,400
             |            
            
                 
             |                                       
         
    
        
            | 
                11/25/2010
             | 
            
                +1.00 / +6.25%
             |             
            
                16.50
             |           
            
                17.00
             |               
            
                16.30
             |                           
            
                17.00
             | 
            
                17.00
             |                     
            
                17.00
             |                                 
            
                226,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/24/2010
             | 
            
                +0.20 / +1.27%
             |             
            
                16.00
             |           
            
                16.10
             |               
            
                15.10
             |                           
            
                16.00
             | 
            
                16.00
             |                     
            
                16.00
             |                                 
            
                85,700
             |            
            
                 
             |                                       
         
    
        
            | 
                11/23/2010
             | 
            
                -0.20 / -1.25%
             |             
            
                16.40
             |           
            
                16.40
             |               
            
                15.60
             |                           
            
                15.80
             | 
            
                15.80
             |                     
            
                15.80
             |                                 
            
                53,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/22/2010
             | 
            
                +0.50 / +3.23%
             |             
            
                15.10
             |           
            
                16.00
             |               
            
                15.10
             |                           
            
                16.00
             | 
            
                16.00
             |                     
            
                16.00
             |                                 
            
                55,800
             |            
            
                 
             |                                       
         
    
        
            | 
                11/19/2010
             | 
            
                -1.00 / -6.06%
             |             
            
                16.80
             |           
            
                16.80
             |               
            
                15.30
             |                           
            
                15.50
             | 
            
                16.50
             |                     
            
                15.50
             |                                 
            
                49,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/18/2010
             | 
            
                +0.80 / +5.10%
             |             
            
                16.00
             |           
            
                16.60
             |               
            
                16.00
             |                           
            
                16.50
             | 
            
                16.50
             |                     
            
                16.50
             |                                 
            
                81,000
             |            
            
                 
             |                                       
         
    
        
            | 
                11/17/2010
             | 
            
                +0.50 / +3.29%
             |             
            
                15.70
             |           
            
                16.00
             |               
            
                14.80
             |                           
            
                15.70
             | 
            
                15.70
             |                     
            
                15.70
             |                                 
            
                17,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/16/2010
             | 
            
                -0.20 / -1.30%
             |             
            
                14.80
             |           
            
                15.40
             |               
            
                14.70
             |                           
            
                15.20
             | 
            
                15.20
             |                     
            
                15.20
             |                                 
            
                50,800
             |            
            
                 
             |                                       
         
    
        
            | 
                11/15/2010
             | 
            
                -1.40 / -8.33%
             |             
            
                17.10
             |           
            
                17.10
             |               
            
                15.20
             |                           
            
                15.40
             | 
            
                15.40
             |                     
            
                15.40
             |                                 
            
                57,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/12/2010
             | 
            
                -0.40 / -2.33%
             |             
            
                16.80
             |           
            
                16.80
             |               
            
                16.00
             |                           
            
                16.80
             | 
            
                16.60
             |                     
            
                16.80
             |                                 
            
                123,600
             |            
            
                 
             |                                       
         
    
        
            | 
                11/11/2010
             | 
            
                -0.60 / -3.37%
             |             
            
                17.40
             |           
            
                17.40
             |               
            
                17.00
             |                           
            
                17.20
             | 
            
                17.20
             |                     
            
                17.20
             |                                 
            
                57,900
             |  
            
                 
             |                                                              
             
    
         
    
    
 |