| 
                 
                    Closing price on 3/4/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    11.60 | 
                 
                
                    | High | 
                    12.00 | 
                 
                
                    | Low | 
                    11.60 | 
                     
                
                    | Volume | 
                    19,100 | 
                                 
                
                    | Split-adjusted Price | 
                    12.00 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
V15 Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/4/2011
             | 
            
                +0.40 / +3.45%
             |             
            
                11.60
             |           
            
                12.00
             |               
            
                11.60
             |                           
            
                12.00
             | 
            
                11.60
             |                     
            
                12.00
             |                                 
            
                19,100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/3/2011
             | 
            
                -0.40 / -3.33%
             |             
            
                12.00
             |           
            
                12.10
             |               
            
                11.60
             |                           
            
                11.60
             | 
            
                11.60
             |                     
            
                11.60
             |                                 
            
                19,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/2/2011
             | 
            
                -0.60 / -4.76%
             |             
            
                12.50
             |           
            
                12.50
             |               
            
                11.90
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                12.00
             |                                 
            
                28,300
             |            
            
                 
             |                                       
         
    
        
            | 
                3/1/2011
             | 
            
                0.00 / 0.00%
             |             
            
                12.80
             |           
            
                12.80
             |               
            
                12.60
             |                           
            
                12.60
             | 
            
                12.60
             |                     
            
                12.60
             |                                 
            
                9,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/28/2011
             | 
            
                -0.70 / -5.26%
             |             
            
                13.00
             |           
            
                13.70
             |               
            
                12.50
             |                           
            
                12.60
             | 
            
                12.60
             |                     
            
                12.60
             |                                 
            
                16,500
             |            
            
                 
             |                                       
         
    
        
            | 
                2/25/2011
             | 
            
                +0.60 / +4.72%
             |             
            
                12.10
             |           
            
                13.30
             |               
            
                12.10
             |                           
            
                13.30
             | 
            
                12.70
             |                     
            
                13.30
             |                                 
            
                32,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/24/2011
             | 
            
                -0.10 / -0.78%
             |             
            
                13.00
             |           
            
                13.00
             |               
            
                12.10
             |                           
            
                12.70
             | 
            
                12.70
             |                     
            
                12.70
             |                                 
            
                39,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/23/2011
             | 
            
                0.00 / 0.00%
             |             
            
                12.50
             |           
            
                13.40
             |               
            
                11.90
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                12.80
             |                                 
            
                18,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/22/2011
             | 
            
                -0.60 / -4.48%
             |             
            
                13.40
             |           
            
                13.40
             |               
            
                12.50
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                12.80
             |                                 
            
                30,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/21/2011
             | 
            
                -0.90 / -6.29%
             |             
            
                13.70
             |           
            
                13.70
             |               
            
                13.40
             |                           
            
                13.40
             | 
            
                13.40
             |                     
            
                13.40
             |                                 
            
                22,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/18/2011
             | 
            
                -0.60 / -4.03%
             |             
            
                15.00
             |           
            
                15.00
             |               
            
                14.10
             |                           
            
                14.30
             | 
            
                14.90
             |                     
            
                14.30
             |                                 
            
                20,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/17/2011
             | 
            
                -0.60 / -3.87%
             |             
            
                15.70
             |           
            
                15.70
             |               
            
                14.80
             |                           
            
                14.90
             | 
            
                14.90
             |                     
            
                14.90
             |                                 
            
                13,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/16/2011
             | 
            
                -0.60 / -3.73%
             |             
            
                16.30
             |           
            
                16.30
             |               
            
                15.50
             |                           
            
                15.50
             | 
            
                15.50
             |                     
            
                15.50
             |                                 
            
                31,100
             |            
            
                 
             |                                       
         
    
        
            | 
                2/15/2011
             | 
            
                -0.10 / -0.62%
             |             
            
                16.30
             |           
            
                16.30
             |               
            
                15.50
             |                           
            
                16.10
             | 
            
                16.10
             |                     
            
                16.10
             |                                 
            
                13,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/14/2011
             | 
            
                -0.30 / -1.82%
             |             
            
                16.70
             |           
            
                16.80
             |               
            
                16.20
             |                           
            
                16.20
             | 
            
                16.20
             |                     
            
                16.20
             |                                 
            
                9,600
             |            
            
                 
             |                                       
         
    
        
            | 
                2/11/2011
             | 
            
                -0.20 / -1.20%
             |             
            
                16.50
             |           
            
                16.60
             |               
            
                16.30
             |                           
            
                16.50
             | 
            
                16.48
             |                     
            
                16.50
             |                                 
            
                15,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/10/2011
             | 
            
                -0.30 / -1.76%
             |             
            
                16.90
             |           
            
                16.90
             |               
            
                16.60
             |                           
            
                16.70
             | 
            
                16.70
             |                     
            
                16.70
             |                                 
            
                3,400
             |            
            
                 
             |                                       
         
    
        
            | 
                2/9/2011
             | 
            
                -0.20 / -1.16%
             |             
            
                17.20
             |           
            
                17.20
             |               
            
                16.90
             |                           
            
                17.00
             | 
            
                17.00
             |                     
            
                17.00
             |                                 
            
                10,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/8/2011
             | 
            
                +0.20 / +1.18%
             |             
            
                17.20
             |           
            
                17.20
             |               
            
                17.20
             |                           
            
                17.20
             | 
            
                17.20
             |                     
            
                17.20
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/28/2011
             | 
            
                0.00 / 0.00%
             |             
            
                17.00
             |           
            
                17.10
             |               
            
                16.90
             |                           
            
                17.00
             | 
            
                17.00
             |                     
            
                17.00
             |                                 
            
                4,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/27/2011
             | 
            
                +0.50 / +3.03%
             |             
            
                16.70
             |           
            
                17.00
             |               
            
                16.50
             |                           
            
                17.00
             | 
            
                17.00
             |                     
            
                17.00
             |                                 
            
                12,700
             |            
            
                 
             |                                       
         
    
        
            | 
                1/26/2011
             | 
            
                -0.20 / -1.20%
             |             
            
                16.70
             |           
            
                16.80
             |               
            
                16.50
             |                           
            
                16.50
             | 
            
                16.50
             |                     
            
                16.50
             |                                 
            
                4,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/25/2011
             | 
            
                +0.40 / +2.45%
             |             
            
                16.50
             |           
            
                16.70
             |               
            
                16.30
             |                           
            
                16.70
             | 
            
                16.70
             |                     
            
                16.70
             |                                 
            
                4,800
             |            
            
                 
             |                                       
         
    
        
            | 
                1/24/2011
             | 
            
                -0.70 / -4.12%
             |             
            
                16.60
             |           
            
                16.80
             |               
            
                16.30
             |                           
            
                16.30
             | 
            
                16.30
             |                     
            
                16.30
             |                                 
            
                35,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/21/2011
             | 
            
                -0.10 / -0.58%
             |             
            
                17.00
             |           
            
                17.00
             |               
            
                16.80
             |                           
            
                17.00
             | 
            
                16.95
             |                     
            
                17.00
             |                                 
            
                10,400
             |            
            
                 
             |                                       
         
    
        
            | 
                1/20/2011
             | 
            
                0.00 / 0.00%
             |             
            
                17.20
             |           
            
                17.20
             |               
            
                16.90
             |                           
            
                17.10
             | 
            
                17.10
             |                     
            
                17.10
             |                                 
            
                18,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/19/2011
             | 
            
                -0.20 / -1.16%
             |             
            
                17.20
             |           
            
                18.00
             |               
            
                17.00
             |                           
            
                17.10
             | 
            
                17.10
             |                     
            
                17.10
             |                                 
            
                5,600
             |            
            
                 
             |                                       
         
    
        
            | 
                1/18/2011
             | 
            
                -0.50 / -2.81%
             |             
            
                18.20
             |           
            
                18.30
             |               
            
                17.30
             |                           
            
                17.30
             | 
            
                17.30
             |                     
            
                17.30
             |                                 
            
                13,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/17/2011
             | 
            
                +0.20 / +1.14%
             |             
            
                18.10
             |           
            
                18.30
             |               
            
                17.80
             |                           
            
                17.80
             | 
            
                17.80
             |                     
            
                17.80
             |                                 
            
                14,800
             |            
            
                 
             |                                       
         
    
        
            | 
                1/14/2011
             | 
            
                0.00 / 0.00%
             |             
            
                17.10
             |           
            
                17.60
             |               
            
                17.10
             |                           
            
                17.60
             | 
            
                17.60
             |                     
            
                17.60
             |                                 
            
                9,900
             |  
            
                 
             |                                                              
             
    
         
    
    
 |