| 
                 
                    Closing price on 8/1/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    9.60 | 
                 
                
                    | High | 
                    9.80 | 
                 
                
                    | Low | 
                    9.50 | 
                     
                
                    | Volume | 
                    11,830 | 
                                 
                
                    | Split-adjusted Price | 
                    7.38 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PIT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/1/2011
             | 
            
                +0.30 / +3.16%
             |             
            
                9.60
             |           
            
                9.80
             |               
            
                9.50
             |                           
            
                9.80
             | 
            
                9.80
             |                     
            
                7.38
             |                                 
            
                11,830
             |            
            
                 
             |                                       
         
    
        
            | 
                7/29/2011
             | 
            
                -0.50 / -5.00%
             |             
            
                10.00
             |           
            
                10.00
             |               
            
                9.50
             |                           
            
                9.50
             | 
            
                9.50
             |                     
            
                7.15
             |                                 
            
                15,050
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/28/2011
             | 
            
                0.00 / 0.00%
             |             
            
                9.90
             |           
            
                10.00
             |               
            
                9.50
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                7.53
             |                                 
            
                17,210
             |            
            
                 
             |                                       
         
    
        
            | 
                7/27/2011
             | 
            
                -0.10 / -0.99%
             |             
            
                9.80
             |           
            
                10.00
             |               
            
                9.80
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                7.53
             |                                 
            
                22,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/26/2011
             | 
            
                +0.30 / +3.06%
             |             
            
                9.90
             |           
            
                10.10
             |               
            
                9.60
             |                           
            
                10.10
             | 
            
                10.10
             |                     
            
                7.61
             |                                 
            
                30,300
             |            
            
                 
             |                                       
         
    
        
            | 
                7/25/2011
             | 
            
                +0.30 / +3.16%
             |             
            
                9.20
             |           
            
                9.80
             |               
            
                9.20
             |                           
            
                9.80
             | 
            
                9.80
             |                     
            
                7.38
             |                                 
            
                16,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/22/2011
             | 
            
                -0.50 / -5.00%
             |             
            
                9.90
             |           
            
                9.90
             |               
            
                9.50
             |                           
            
                9.50
             | 
            
                9.50
             |                     
            
                7.15
             |                                 
            
                580
             |            
            
                 
             |                                       
         
    
        
            | 
                7/21/2011
             | 
            
                0.00 / 0.00%
             |             
            
                9.80
             |           
            
                10.00
             |               
            
                9.70
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                7.53
             |                                 
            
                154,110
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/20/2011
             | 
            
                0.00 / 0.00%
             |             
            
                9.70
             |           
            
                10.00
             |               
            
                9.70
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                7.53
             |                                 
            
                25,210
             |            
            
                 
             |                                       
         
    
        
            | 
                7/19/2011
             | 
            
                0.00 / 0.00%
             |             
            
                9.60
             |           
            
                10.00
             |               
            
                9.60
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                7.53
             |                                 
            
                15,280
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/18/2011
             | 
            
                0.00 / 0.00%
             |             
            
                9.80
             |           
            
                10.00
             |               
            
                9.80
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                7.53
             |                                 
            
                16,980
             |            
            
                 
             |                                       
         
    
        
            | 
                7/15/2011
             | 
            
                -0.10 / -0.99%
             |             
            
                10.00
             |           
            
                10.00
             |               
            
                10.00
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                7.53
             |                                 
            
                2,020
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/14/2011
             | 
            
                +0.10 / +1.00%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                10.00
             |                           
            
                10.10
             | 
            
                10.10
             |                     
            
                7.61
             |                                 
            
                12,460
             |            
            
                 
             |                                       
         
    
        
            | 
                7/13/2011
             | 
            
                0.00 / 0.00%
             |             
            
                9.70
             |           
            
                10.00
             |               
            
                9.70
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                7.53
             |                                 
            
                21,130
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/12/2011
             | 
            
                0.00 / 0.00%
             |             
            
                9.50
             |           
            
                10.00
             |               
            
                9.50
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                7.53
             |                                 
            
                30,380
             |            
            
                 
             |                                       
         
    
        
            | 
                7/11/2011
             | 
            
                +0.20 / +2.04%
             |             
            
                9.90
             |           
            
                10.00
             |               
            
                9.50
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                7.53
             |                                 
            
                40,070
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/8/2011
             | 
            
                0.00 / 0.00%
             |             
            
                9.60
             |           
            
                9.80
             |               
            
                9.60
             |                           
            
                9.80
             | 
            
                9.80
             |                     
            
                7.38
             |                                 
            
                23,250
             |            
            
                 
             |                                       
         
    
        
            | 
                7/7/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                9.90
             |           
            
                9.90
             |               
            
                9.60
             |                           
            
                9.80
             | 
            
                9.80
             |                     
            
                7.38
             |                                 
            
                14,490
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/6/2011
             | 
            
                +0.10 / +1.03%
             |             
            
                9.80
             |           
            
                9.80
             |               
            
                9.50
             |                           
            
                9.80
             | 
            
                9.80
             |                     
            
                7.38
             |                                 
            
                14,950
             |            
            
                 
             |                                       
         
    
        
            | 
                7/5/2011
             | 
            
                -0.10 / -1.02%
             |             
            
                9.80
             |           
            
                10.00
             |               
            
                9.70
             |                           
            
                9.70
             | 
            
                9.70
             |                     
            
                7.30
             |                                 
            
                4,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/4/2011
             | 
            
                +0.10 / +1.03%
             |             
            
                9.70
             |           
            
                9.80
             |               
            
                9.40
             |                           
            
                9.80
             | 
            
                9.80
             |                     
            
                7.38
             |                                 
            
                22,980
             |            
            
                 
             |                                       
         
    
        
            | 
                7/1/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                10.00
             |           
            
                10.00
             |               
            
                9.30
             |                           
            
                9.70
             | 
            
                9.70
             |                     
            
                7.30
             |                                 
            
                50,680
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/30/2011
             | 
            
                -0.30 / -3.00%
             |             
            
                9.80
             |           
            
                9.80
             |               
            
                9.70
             |                           
            
                9.70
             | 
            
                9.70
             |                     
            
                7.30
             |                                 
            
                6,650
             |            
            
                 
             |                                       
         
    
        
            | 
                6/29/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                9.70
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                7.53
             |                                 
            
                6,130
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/28/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.20
             |           
            
                10.20
             |               
            
                9.70
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                7.53
             |                                 
            
                14,490
             |            
            
                 
             |                                       
         
    
        
            | 
                6/27/2011
             | 
            
                -0.30 / -2.91%
             |             
            
                9.80
             |           
            
                10.30
             |               
            
                9.80
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                7.53
             |                                 
            
                2,150
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/24/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                10.10
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                7.76
             |                                 
            
                15,030
             |            
            
                 
             |                                       
         
    
        
            | 
                6/23/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.40
             |           
            
                10.40
             |               
            
                10.00
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                7.76
             |                                 
            
                13,580
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/22/2011
             | 
            
                +0.30 / +3.00%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                9.70
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                7.76
             |                                 
            
                31,880
             |            
            
                 
             |                                       
         
    
        
            | 
                6/21/2011
             | 
            
                +0.30 / +3.09%
             |             
            
                9.70
             |           
            
                10.00
             |               
            
                9.70
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                7.53
             |                                 
            
                12,080
             |  
            
                 
             |                                                              
             
    
         
    
    
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