| 
                 
                    Closing price on 8/17/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    9.30 | 
                 
                
                    | High | 
                    9.40 | 
                 
                
                    | Low | 
                    9.20 | 
                     
                
                    | Volume | 
                    880 | 
                                 
                
                    | Split-adjusted Price | 
                    7.08 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PIT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/17/2011
             | 
            
                +0.10 / +1.08%
             |             
            
                9.30
             |           
            
                9.40
             |               
            
                9.20
             |                           
            
                9.40
             | 
            
                9.40
             |                     
            
                7.08
             |                                 
            
                880
             |            
            
                 
             |                                       
         
    
        
            | 
                8/16/2011
             | 
            
                +0.10 / +1.09%
             |             
            
                9.50
             |           
            
                9.50
             |               
            
                9.20
             |                           
            
                9.30
             | 
            
                9.30
             |                     
            
                7.00
             |                                 
            
                12,520
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/15/2011
             | 
            
                +0.30 / +3.37%
             |             
            
                8.70
             |           
            
                9.30
             |               
            
                8.70
             |                           
            
                9.20
             | 
            
                9.20
             |                     
            
                6.93
             |                                 
            
                12,630
             |            
            
                 
             |                                       
         
    
        
            | 
                8/12/2011
             | 
            
                -0.10 / -1.11%
             |             
            
                8.70
             |           
            
                9.20
             |               
            
                8.70
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                6.70
             |                                 
            
                10,790
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/11/2011
             | 
            
                -0.10 / -1.10%
             |             
            
                9.40
             |           
            
                9.40
             |               
            
                8.80
             |                           
            
                9.00
             | 
            
                9.00
             |                     
            
                6.78
             |                                 
            
                5,470
             |            
            
                 
             |                                       
         
    
        
            | 
                8/10/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                9.40
             |           
            
                9.40
             |               
            
                9.10
             |                           
            
                9.10
             | 
            
                9.10
             |                     
            
                6.85
             |                                 
            
                8,620
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/9/2011
             | 
            
                -0.40 / -4.21%
             |             
            
                9.20
             |           
            
                9.20
             |               
            
                9.10
             |                           
            
                9.10
             | 
            
                9.10
             |                     
            
                6.85
             |                                 
            
                13,340
             |            
            
                 
             |                                       
         
    
        
            | 
                8/8/2011
             | 
            
                -0.50 / -5.00%
             |             
            
                9.50
             |           
            
                9.90
             |               
            
                9.50
             |                           
            
                9.50
             | 
            
                9.50
             |                     
            
                7.15
             |                                 
            
                13,710
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/5/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.00
             |           
            
                10.00
             |               
            
                9.50
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                7.53
             |                                 
            
                45,090
             |            
            
                 
             |                                       
         
    
        
            | 
                8/4/2011
             | 
            
                +0.20 / +2.04%
             |             
            
                9.60
             |           
            
                10.00
             |               
            
                9.60
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                7.53
             |                                 
            
                18,620
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/3/2011
             | 
            
                0.00 / 0.00%
             |             
            
                9.60
             |           
            
                9.80
             |               
            
                9.40
             |                           
            
                9.80
             | 
            
                9.80
             |                     
            
                7.38
             |                                 
            
                27,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/2/2011
             | 
            
                0.00 / 0.00%
             |             
            
                9.60
             |           
            
                9.80
             |               
            
                9.60
             |                           
            
                9.80
             | 
            
                9.80
             |                     
            
                7.38
             |                                 
            
                9,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                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
             |  
            
                 
             |                                                              
             
    
         
    
    
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