| 
                 
                    Closing price on 9/15/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    7.00 | 
                 
                
                    | High | 
                    7.20 | 
                 
                
                    | Low | 
                    6.90 | 
                     
                
                    | Volume | 
                    199,500 | 
                                 
                
                    | Split-adjusted Price | 
                    6.90 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
V15 Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                9/15/2011
             | 
            
                0.00 / 0.00%
             |             
            
                7.00
             |           
            
                7.20
             |               
            
                6.90
             |                           
            
                6.90
             | 
            
                6.90
             |                     
            
                6.90
             |                                 
            
                199,500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/14/2011
             | 
            
                -0.20 / -2.82%
             |             
            
                7.50
             |           
            
                7.50
             |               
            
                6.90
             |                           
            
                6.90
             | 
            
                6.90
             |                     
            
                6.90
             |                                 
            
                413,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/13/2011
             | 
            
                +0.40 / +5.97%
             |             
            
                7.10
             |           
            
                7.10
             |               
            
                7.10
             |                           
            
                7.10
             | 
            
                7.10
             |                     
            
                7.10
             |                                 
            
                120,500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/12/2011
             | 
            
                +0.30 / +4.69%
             |             
            
                6.40
             |           
            
                6.70
             |               
            
                6.40
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                6.70
             |                                 
            
                170,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/9/2011
             | 
            
                +0.10 / +1.59%
             |             
            
                6.40
             |           
            
                6.50
             |               
            
                6.10
             |                           
            
                6.40
             | 
            
                6.30
             |                     
            
                6.40
             |                                 
            
                119,000
             |            
            
                 
             |                                       
         
    
        
            | 
                9/8/2011
             | 
            
                -0.10 / -1.56%
             |             
            
                6.70
             |           
            
                6.70
             |               
            
                5.90
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                6.30
             |                                 
            
                92,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/7/2011
             | 
            
                +0.50 / +8.47%
             |             
            
                6.20
             |           
            
                6.40
             |               
            
                6.10
             |                           
            
                6.40
             | 
            
                6.40
             |                     
            
                6.40
             |                                 
            
                86,700
             |            
            
                 
             |                                       
         
    
        
            | 
                9/6/2011
             | 
            
                -0.40 / -6.35%
             |             
            
                6.10
             |           
            
                6.10
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.90
             |                     
            
                5.90
             |                                 
            
                179,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/5/2011
             | 
            
                +0.30 / +5.00%
             |             
            
                6.20
             |           
            
                6.30
             |               
            
                6.00
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                6.30
             |                                 
            
                236,500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/1/2011
             | 
            
                +0.40 / +7.14%
             |             
            
                5.70
             |           
            
                6.00
             |               
            
                5.70
             |                           
            
                6.00
             | 
            
                5.85
             |                     
            
                6.00
             |                                 
            
                132,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/31/2011
             | 
            
                +0.10 / +1.82%
             |             
            
                5.60
             |           
            
                5.80
             |               
            
                5.60
             |                           
            
                5.60
             | 
            
                5.60
             |                     
            
                5.60
             |                                 
            
                107,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/30/2011
             | 
            
                +0.20 / +3.77%
             |             
            
                5.50
             |           
            
                5.60
             |               
            
                5.40
             |                           
            
                5.50
             | 
            
                5.50
             |                     
            
                5.50
             |                                 
            
                140,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/29/2011
             | 
            
                +0.30 / +6.00%
             |             
            
                5.10
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.30
             | 
            
                5.30
             |                     
            
                5.30
             |                                 
            
                68,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/26/2011
             | 
            
                -0.10 / -1.96%
             |             
            
                5.00
             |           
            
                5.10
             |               
            
                5.00
             |                           
            
                5.00
             | 
            
                5.10
             |                     
            
                5.00
             |                                 
            
                41,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/25/2011
             | 
            
                -0.10 / -1.92%
             |             
            
                5.20
             |           
            
                5.20
             |               
            
                5.00
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                5.10
             |                                 
            
                55,400
             |            
            
                 
             |                                       
         
    
        
            | 
                8/24/2011
             | 
            
                -0.10 / -1.89%
             |             
            
                5.40
             |           
            
                5.40
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                5.20
             |                                 
            
                29,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/23/2011
             | 
            
                +0.10 / +1.92%
             |             
            
                5.50
             |           
            
                5.50
             |               
            
                5.10
             |                           
            
                5.30
             | 
            
                5.30
             |                     
            
                5.30
             |                                 
            
                75,800
             |            
            
                 
             |                                       
         
    
        
            | 
                8/22/2011
             | 
            
                +0.40 / +8.33%
             |             
            
                5.00
             |           
            
                5.20
             |               
            
                5.00
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                5.20
             |                                 
            
                97,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/19/2011
             | 
            
                -0.20 / -4.00%
             |             
            
                5.00
             |           
            
                5.00
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                5.00
             |                     
            
                4.80
             |                                 
            
                22,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/18/2011
             | 
            
                0.00 / 0.00%
             |             
            
                5.30
             |           
            
                5.30
             |               
            
                5.00
             |                           
            
                5.00
             | 
            
                5.00
             |                     
            
                5.00
             |                                 
            
                126,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/17/2011
             | 
            
                +0.10 / +2.04%
             |             
            
                5.00
             |           
            
                5.20
             |               
            
                4.90
             |                           
            
                5.00
             | 
            
                5.00
             |                     
            
                5.00
             |                                 
            
                69,400
             |            
            
                 
             |                                       
         
    
        
            | 
                8/16/2011
             | 
            
                +0.10 / +2.08%
             |             
            
                4.90
             |           
            
                5.00
             |               
            
                4.80
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                4.90
             |                                 
            
                14,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/15/2011
             | 
            
                0.00 / 0.00%
             |             
            
                4.80
             |           
            
                4.90
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                4.80
             |                                 
            
                12,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/12/2011
             | 
            
                +0.10 / +2.13%
             |             
            
                4.80
             |           
            
                4.80
             |               
            
                4.70
             |                           
            
                4.80
             | 
            
                4.70
             |                     
            
                4.80
             |                                 
            
                11,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/11/2011
             | 
            
                -0.10 / -2.08%
             |             
            
                4.50
             |           
            
                4.70
             |               
            
                4.50
             |                           
            
                4.70
             | 
            
                4.70
             |                     
            
                4.70
             |                                 
            
                7,700
             |            
            
                 
             |                                       
         
    
        
            | 
                8/10/2011
             | 
            
                +0.10 / +2.13%
             |             
            
                4.80
             |           
            
                4.90
             |               
            
                4.60
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                4.80
             |                                 
            
                40,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/9/2011
             | 
            
                -0.20 / -4.08%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.70
             |                           
            
                4.70
             | 
            
                4.70
             |                     
            
                4.70
             |                                 
            
                65,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/8/2011
             | 
            
                -0.20 / -3.92%
             |             
            
                5.10
             |           
            
                5.10
             |               
            
                4.90
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                4.90
             |                                 
            
                25,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/5/2011
             | 
            
                -0.30 / -5.56%
             |             
            
                5.30
             |           
            
                5.40
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.40
             |                     
            
                5.10
             |                                 
            
                103,200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/4/2011
             | 
            
                +0.20 / +3.85%
             |             
            
                5.20
             |           
            
                5.40
             |               
            
                5.20
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                5.40
             |                                 
            
                31,800
             |  
            
                 
             |                                                              
             
    
         
    
    
 |