| 
                 
                    Closing price on 10/5/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    8.70 | 
                 
                
                    | High | 
                    8.90 | 
                 
                
                    | Low | 
                    8.70 | 
                     
                
                    | Volume | 
                    3,630 | 
                                 
                
                    | Split-adjusted Price | 
                    6.70 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PIT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                10/5/2011
             | 
            
                +0.20 / +2.30%
             |             
            
                8.70
             |           
            
                8.90
             |               
            
                8.70
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                6.70
             |                                 
            
                3,630
             |            
            
                 
             |                                       
         
    
        
            | 
                10/4/2011
             | 
            
                -0.10 / -1.14%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.70
             |                           
            
                8.70
             | 
            
                8.70
             |                     
            
                6.55
             |                                 
            
                4,490
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/3/2011
             | 
            
                -0.30 / -3.30%
             |             
            
                9.10
             |           
            
                9.10
             |               
            
                8.80
             |                           
            
                8.80
             | 
            
                8.80
             |                     
            
                6.63
             |                                 
            
                19,140
             |            
            
                 
             |                                       
         
    
        
            | 
                9/30/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                9.20
             |           
            
                9.20
             |               
            
                9.00
             |                           
            
                9.10
             | 
            
                9.10
             |                     
            
                6.85
             |                                 
            
                5,050
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/29/2011
             | 
            
                0.00 / 0.00%
             |             
            
                9.10
             |           
            
                9.10
             |               
            
                8.90
             |                           
            
                9.10
             | 
            
                9.10
             |                     
            
                6.85
             |                                 
            
                8,430
             |            
            
                 
             |                                       
         
    
        
            | 
                9/28/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                9.30
             |           
            
                9.30
             |               
            
                9.00
             |                           
            
                9.10
             | 
            
                9.10
             |                     
            
                6.85
             |                                 
            
                15,740
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/27/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                9.00
             |           
            
                9.30
             |               
            
                9.00
             |                           
            
                9.10
             | 
            
                9.10
             |                     
            
                6.85
             |                                 
            
                4,650
             |            
            
                 
             |                                       
         
    
        
            | 
                9/26/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                9.40
             |           
            
                9.40
             |               
            
                9.10
             |                           
            
                9.10
             | 
            
                9.10
             |                     
            
                6.85
             |                                 
            
                29,120
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/23/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                9.20
             |           
            
                9.30
             |               
            
                8.90
             |                           
            
                9.10
             | 
            
                9.10
             |                     
            
                6.85
             |                                 
            
                10,920
             |            
            
                 
             |                                       
         
    
        
            | 
                9/22/2011
             | 
            
                +0.10 / +1.11%
             |             
            
                8.90
             |           
            
                9.30
             |               
            
                8.90
             |                           
            
                9.10
             | 
            
                9.10
             |                     
            
                6.85
             |                                 
            
                2,170
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/21/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                9.00
             |           
            
                9.30
             |               
            
                9.00
             |                           
            
                9.00
             | 
            
                9.00
             |                     
            
                6.78
             |                                 
            
                7,230
             |            
            
                 
             |                                       
         
    
        
            | 
                9/20/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                9.30
             |           
            
                9.30
             |               
            
                9.00
             |                           
            
                9.00
             | 
            
                9.00
             |                     
            
                6.78
             |                                 
            
                15,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/19/2011
             | 
            
                -0.10 / -1.10%
             |             
            
                9.00
             |           
            
                9.30
             |               
            
                9.00
             |                           
            
                9.00
             | 
            
                9.00
             |                     
            
                6.78
             |                                 
            
                10,610
             |            
            
                 
             |                                       
         
    
        
            | 
                9/16/2011
             | 
            
                -0.10 / -1.09%
             |             
            
                9.50
             |           
            
                9.50
             |               
            
                9.10
             |                           
            
                9.10
             | 
            
                9.10
             |                     
            
                6.85
             |                                 
            
                3,220
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/15/2011
             | 
            
                -0.30 / -3.16%
             |             
            
                9.60
             |           
            
                9.60
             |               
            
                9.10
             |                           
            
                9.20
             | 
            
                9.20
             |                     
            
                6.93
             |                                 
            
                35,940
             |            
            
                 
             |                                       
         
    
        
            | 
                9/14/2011
             | 
            
                -0.30 / -3.06%
             |             
            
                9.90
             |           
            
                9.90
             |               
            
                9.50
             |                           
            
                9.50
             | 
            
                9.50
             |                     
            
                7.15
             |                                 
            
                13,890
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/13/2011
             | 
            
                +0.30 / +3.16%
             |             
            
                9.80
             |           
            
                9.80
             |               
            
                9.60
             |                           
            
                9.80
             | 
            
                9.80
             |                     
            
                7.38
             |                                 
            
                43,220
             |            
            
                 
             |                                       
         
    
        
            | 
                9/12/2011
             | 
            
                -0.10 / -1.04%
             |             
            
                9.80
             |           
            
                9.80
             |               
            
                9.50
             |                           
            
                9.50
             | 
            
                9.50
             |                     
            
                7.15
             |                                 
            
                8,020
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/9/2011
             | 
            
                +0.30 / +3.23%
             |             
            
                9.40
             |           
            
                9.70
             |               
            
                9.10
             |                           
            
                9.60
             | 
            
                9.60
             |                     
            
                7.23
             |                                 
            
                43,910
             |            
            
                 
             |                                       
         
    
        
            | 
                9/8/2011
             | 
            
                +0.30 / +3.33%
             |             
            
                9.30
             |           
            
                9.40
             |               
            
                9.00
             |                           
            
                9.30
             | 
            
                9.30
             |                     
            
                7.00
             |                                 
            
                40,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/7/2011
             | 
            
                +0.10 / +1.12%
             |             
            
                8.90
             |           
            
                9.30
             |               
            
                8.90
             |                           
            
                9.00
             | 
            
                9.00
             |                     
            
                6.78
             |                                 
            
                4,930
             |            
            
                 
             |                                       
         
    
        
            | 
                9/6/2011
             | 
            
                -0.10 / -1.11%
             |             
            
                8.80
             |           
            
                9.10
             |               
            
                8.80
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                6.70
             |                                 
            
                12,540
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/5/2011
             | 
            
                -0.10 / -1.10%
             |             
            
                9.10
             |           
            
                9.30
             |               
            
                9.00
             |                           
            
                9.00
             | 
            
                9.00
             |                     
            
                6.78
             |                                 
            
                7,710
             |            
            
                 
             |                                       
         
    
        
            | 
                9/1/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                9.10
             |           
            
                9.20
             |               
            
                9.10
             |                           
            
                9.10
             | 
            
                9.10
             |                     
            
                6.85
             |                                 
            
                23,090
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/31/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                9.00
             |           
            
                9.30
             |               
            
                9.00
             |                           
            
                9.10
             | 
            
                9.10
             |                     
            
                6.85
             |                                 
            
                7,380
             |            
            
                 
             |                                       
         
    
        
            | 
                8/30/2011
             | 
            
                +0.20 / +2.25%
             |             
            
                9.00
             |           
            
                9.30
             |               
            
                9.00
             |                           
            
                9.10
             | 
            
                9.10
             |                     
            
                6.85
             |                                 
            
                12,960
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/29/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                9.10
             |           
            
                9.10
             |               
            
                8.80
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                6.70
             |                                 
            
                9,260
             |            
            
                 
             |                                       
         
    
        
            | 
                8/26/2011
             | 
            
                -0.10 / -1.11%
             |             
            
                8.80
             |           
            
                9.00
             |               
            
                8.80
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                6.70
             |                                 
            
                7,010
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/25/2011
             | 
            
                +0.10 / +1.12%
             |             
            
                8.80
             |           
            
                9.20
             |               
            
                8.80
             |                           
            
                9.00
             | 
            
                9.00
             |                     
            
                6.78
             |                                 
            
                4,440
             |            
            
                 
             |                                       
         
    
        
            | 
                8/24/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                8.90
             |           
            
                9.20
             |               
            
                8.70
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                6.70
             |                                 
            
                910
             |  
            
                 
             |                                                              
             
    
         
    
    
 |