| 
                 
                    Closing price on 5/11/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    10.20 | 
                 
                
                    | High | 
                    10.20 | 
                 
                
                    | Low | 
                    10.10 | 
                     
                
                    | Volume | 
                    29,320 | 
                                 
                
                    | Split-adjusted Price | 
                    6.61 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PIT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/11/2011
             | 
            
                -0.10 / -0.98%
             |             
            
                10.20
             |           
            
                10.20
             |               
            
                10.10
             |                           
            
                10.10
             | 
            
                10.10
             |                     
            
                6.61
             |                                 
            
                29,320
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2011
             | 
            
                -0.10 / -0.97%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                10.20
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                6.68
             |                                 
            
                7,290
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/9/2011
             | 
            
                +0.10 / +0.98%
             |             
            
                10.20
             |           
            
                10.30
             |               
            
                10.10
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.74
             |                                 
            
                16,350
             |            
            
                 
             |                                       
         
    
        
            | 
                5/6/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.20
             |           
            
                10.20
             |               
            
                10.10
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                6.68
             |                                 
            
                12,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/5/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                10.10
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                6.68
             |                                 
            
                25,480
             |            
            
                 
             |                                       
         
    
        
            | 
                5/4/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                10.10
             |           
            
                10.40
             |               
            
                10.10
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                6.68
             |                                 
            
                8,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/29/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                10.60
             |           
            
                10.60
             |               
            
                10.20
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                6.68
             |                                 
            
                13,050
             |            
            
                 
             |                                       
         
    
        
            | 
                4/28/2011
             | 
            
                -0.10 / -0.97%
             |             
            
                10.30
             |           
            
                10.40
             |               
            
                10.20
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                6.68
             |                                 
            
                22,360
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/27/2011
             | 
            
                -0.10 / -0.96%
             |             
            
                10.50
             |           
            
                10.50
             |               
            
                10.30
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.74
             |                                 
            
                19,910
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2011
             | 
            
                -0.20 / -1.89%
             |             
            
                10.50
             |           
            
                10.70
             |               
            
                10.40
             |                           
            
                10.40
             | 
            
                10.40
             |                     
            
                6.81
             |                                 
            
                17,240
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/25/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                10.50
             |           
            
                10.70
             |               
            
                10.50
             |                           
            
                10.60
             | 
            
                10.60
             |                     
            
                6.94
             |                                 
            
                44,160
             |            
            
                 
             |                                       
         
    
        
            | 
                4/22/2011
             | 
            
                -0.30 / -2.75%
             |             
            
                11.20
             |           
            
                11.20
             |               
            
                10.50
             |                           
            
                10.60
             | 
            
                10.60
             |                     
            
                6.94
             |                                 
            
                10,680
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/21/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.90
             |           
            
                11.00
             |               
            
                10.80
             |                           
            
                10.90
             | 
            
                10.90
             |                     
            
                7.14
             |                                 
            
                6,030
             |            
            
                 
             |                                       
         
    
        
            | 
                4/20/2011
             | 
            
                0.00 / 0.00%
             |             
            
                11.00
             |           
            
                11.20
             |               
            
                10.90
             |                           
            
                10.90
             | 
            
                10.90
             |                     
            
                7.14
             |                                 
            
                23,070
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/19/2011
             | 
            
                -0.30 / -2.68%
             |             
            
                11.20
             |           
            
                11.20
             |               
            
                10.90
             |                           
            
                10.90
             | 
            
                10.90
             |                     
            
                7.14
             |                                 
            
                24,610
             |            
            
                 
             |                                       
         
    
        
            | 
                4/18/2011
             | 
            
                -0.30 / -2.61%
             |             
            
                11.60
             |           
            
                11.60
             |               
            
                11.10
             |                           
            
                11.20
             | 
            
                11.20
             |                     
            
                7.33
             |                                 
            
                32,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/15/2011
             | 
            
                0.00 / 0.00%
             |             
            
                11.50
             |           
            
                11.60
             |               
            
                11.40
             |                           
            
                11.50
             | 
            
                11.50
             |                     
            
                7.53
             |                                 
            
                23,240
             |            
            
                 
             |                                       
         
    
        
            | 
                4/14/2011
             | 
            
                -0.10 / -0.86%
             |             
            
                11.90
             |           
            
                11.90
             |               
            
                11.50
             |                           
            
                11.50
             | 
            
                11.50
             |                     
            
                7.53
             |                                 
            
                13,780
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/13/2011
             | 
            
                -0.20 / -1.69%
             |             
            
                11.90
             |           
            
                11.90
             |               
            
                11.60
             |                           
            
                11.60
             | 
            
                11.60
             |                     
            
                7.60
             |                                 
            
                16,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/8/2011
             | 
            
                -0.10 / -0.84%
             |             
            
                11.90
             |           
            
                11.90
             |               
            
                11.70
             |                           
            
                11.80
             | 
            
                11.80
             |                     
            
                7.73
             |                                 
            
                28,880
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/7/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                12.10
             |           
            
                12.10
             |               
            
                11.80
             |                           
            
                11.90
             | 
            
                11.90
             |                     
            
                7.79
             |                                 
            
                13,920
             |            
            
                 
             |                                       
         
    
        
            | 
                4/6/2011
             | 
            
                +0.40 / +3.48%
             |             
            
                11.70
             |           
            
                11.90
             |               
            
                11.70
             |                           
            
                11.90
             | 
            
                11.90
             |                     
            
                7.79
             |                                 
            
                26,520
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/5/2011
             | 
            
                -0.10 / -0.86%
             |             
            
                11.30
             |           
            
                11.90
             |               
            
                11.20
             |                           
            
                11.50
             | 
            
                11.50
             |                     
            
                7.53
             |                                 
            
                15,110
             |            
            
                 
             |                                       
         
    
        
            | 
                4/4/2011
             | 
            
                -0.30 / -2.52%
             |             
            
                11.90
             |           
            
                11.90
             |               
            
                11.60
             |                           
            
                11.60
             | 
            
                11.60
             |                     
            
                7.60
             |                                 
            
                9,160
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/1/2011
             | 
            
                +0.10 / +0.85%
             |             
            
                12.00
             |           
            
                12.00
             |               
            
                11.80
             |                           
            
                11.90
             | 
            
                11.90
             |                     
            
                7.79
             |                                 
            
                22,150
             |            
            
                 
             |                                       
         
    
        
            | 
                3/31/2011
             | 
            
                -0.10 / -0.84%
             |             
            
                11.80
             |           
            
                12.00
             |               
            
                11.80
             |                           
            
                11.80
             | 
            
                11.80
             |                     
            
                7.73
             |                                 
            
                25,910
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/30/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                11.90
             |           
            
                12.00
             |               
            
                11.50
             |                           
            
                11.90
             | 
            
                11.90
             |                     
            
                7.79
             |                                 
            
                45,290
             |            
            
                 
             |                                       
         
    
        
            | 
                3/29/2011
             | 
            
                -0.10 / -0.83%
             |             
            
                11.90
             |           
            
                12.00
             |               
            
                11.90
             |                           
            
                11.90
             | 
            
                11.90
             |                     
            
                7.79
             |                                 
            
                40,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/28/2011
             | 
            
                -0.10 / -0.83%
             |             
            
                12.30
             |           
            
                12.30
             |               
            
                12.00
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                7.86
             |                                 
            
                16,150
             |            
            
                 
             |                                       
         
    
        
            | 
                3/25/2011
             | 
            
                -0.20 / -1.63%
             |             
            
                12.30
             |           
            
                12.30
             |               
            
                12.10
             |                           
            
                12.10
             | 
            
                12.10
             |                     
            
                7.92
             |                                 
            
                5,330
             |  
            
                 
             |                                                              
             
    
         
    
    
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