| 
                 
                    Closing price on 6/22/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    10.30 | 
                 
                
                    | High | 
                    10.30 | 
                 
                
                    | Low | 
                    9.70 | 
                     
                
                    | Volume | 
                    31,880 | 
                                 
                
                    | Split-adjusted Price | 
                    7.76 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PIT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                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
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/20/2011
             | 
            
                -0.40 / -3.96%
             |             
            
                9.70
             |           
            
                9.80
             |               
            
                9.70
             |                           
            
                9.70
             | 
            
                9.70
             |                     
            
                7.30
             |                                 
            
                13,830
             |            
            
                 
             |                                       
         
    
        
            | 
                6/17/2011
             | 
            
                -0.50 / -4.72%
             |             
            
                10.40
             |           
            
                10.40
             |               
            
                10.10
             |                           
            
                10.10
             | 
            
                10.10
             |                     
            
                7.61
             |                                 
            
                13,310
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/16/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.30
             |           
            
                10.60
             |               
            
                10.30
             |                           
            
                10.60
             | 
            
                10.60
             |                     
            
                7.98
             |                                 
            
                23,060
             |            
            
                 
             |                                       
         
    
        
            | 
                6/15/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                10.70
             |           
            
                10.70
             |               
            
                10.10
             |                           
            
                10.60
             | 
            
                10.60
             |                     
            
                7.98
             |                                 
            
                53,570
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/14/2011
             | 
            
                +0.30 / +2.91%
             |             
            
                10.50
             |           
            
                10.80
             |               
            
                10.40
             |                           
            
                10.60
             | 
            
                10.60
             |                     
            
                7.98
             |                                 
            
                35,170
             |            
            
                 
             |                                       
         
    
        
            | 
                6/13/2011
             | 
            
                -1.20 / -10.43%
             |             
            
                10.40
             |           
            
                10.50
             |               
            
                10.10
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                7.76
             |                                 
            
                24,640
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/10/2011
             | 
            
                +0.10 / +0.88%
             |             
            
                11.70
             |           
            
                11.70
             |               
            
                11.40
             |                           
            
                11.50
             | 
            
                11.50
             |                     
            
                7.53
             |                                 
            
                74,820
             |            
            
                 
             |                                       
         
    
        
            | 
                6/9/2011
             | 
            
                +0.10 / +0.88%
             |             
            
                11.40
             |           
            
                11.50
             |               
            
                11.40
             |                           
            
                11.40
             | 
            
                11.40
             |                     
            
                7.46
             |                                 
            
                36,320
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/8/2011
             | 
            
                +0.30 / +2.73%
             |             
            
                11.30
             |           
            
                11.30
             |               
            
                10.80
             |                           
            
                11.30
             | 
            
                11.30
             |                     
            
                7.40
             |                                 
            
                22,600
             |            
            
                 
             |                                       
         
    
        
            | 
                6/7/2011
             | 
            
                +0.50 / +4.76%
             |             
            
                10.60
             |           
            
                11.00
             |               
            
                10.60
             |                           
            
                11.00
             | 
            
                11.00
             |                     
            
                7.20
             |                                 
            
                33,630
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/6/2011
             | 
            
                -0.10 / -0.94%
             |             
            
                10.30
             |           
            
                10.50
             |               
            
                10.20
             |                           
            
                10.50
             | 
            
                10.50
             |                     
            
                6.88
             |                                 
            
                48,510
             |            
            
                 
             |                                       
         
    
        
            | 
                6/3/2011
             | 
            
                +0.30 / +2.91%
             |             
            
                10.80
             |           
            
                10.80
             |               
            
                10.30
             |                           
            
                10.60
             | 
            
                10.60
             |                     
            
                6.94
             |                                 
            
                80,060
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/2/2011
             | 
            
                +0.40 / +4.04%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                10.30
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                6.74
             |                                 
            
                37,210
             |            
            
                 
             |                                       
         
    
        
            | 
                6/1/2011
             | 
            
                +0.40 / +4.21%
             |             
            
                9.90
             |           
            
                9.90
             |               
            
                9.80
             |                           
            
                9.90
             | 
            
                9.90
             |                     
            
                6.48
             |                                 
            
                17,650
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/31/2011
             | 
            
                +0.40 / +4.40%
             |             
            
                9.20
             |           
            
                9.50
             |               
            
                9.10
             |                           
            
                9.50
             | 
            
                9.50
             |                     
            
                6.22
             |                                 
            
                60,970
             |            
            
                 
             |                                       
         
    
        
            | 
                5/30/2011
             | 
            
                -0.30 / -3.19%
             |             
            
                9.40
             |           
            
                9.40
             |               
            
                9.10
             |                           
            
                9.10
             | 
            
                9.10
             |                     
            
                5.96
             |                                 
            
                32,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/27/2011
             | 
            
                +0.40 / +4.44%
             |             
            
                9.00
             |           
            
                9.40
             |               
            
                9.00
             |                           
            
                9.40
             | 
            
                9.40
             |                     
            
                6.16
             |                                 
            
                17,240
             |            
            
                 
             |                                       
         
    
        
            | 
                5/26/2011
             | 
            
                +0.40 / +4.65%
             |             
            
                8.30
             |           
            
                9.00
             |               
            
                8.30
             |                           
            
                9.00
             | 
            
                9.00
             |                     
            
                5.89
             |                                 
            
                17,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/25/2011
             | 
            
                -0.40 / -4.44%
             |             
            
                8.80
             |           
            
                8.90
             |               
            
                8.60
             |                           
            
                8.60
             | 
            
                8.60
             |                     
            
                5.63
             |                                 
            
                81,310
             |            
            
                 
             |                                       
         
    
        
            | 
                5/24/2011
             | 
            
                -0.40 / -4.26%
             |             
            
                9.40
             |           
            
                9.40
             |               
            
                9.00
             |                           
            
                9.00
             | 
            
                9.00
             |                     
            
                5.89
             |                                 
            
                76,670
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/23/2011
             | 
            
                -0.20 / -2.08%
             |             
            
                9.60
             |           
            
                9.60
             |               
            
                9.20
             |                           
            
                9.40
             | 
            
                9.40
             |                     
            
                6.16
             |                                 
            
                51,630
             |            
            
                 
             |                                       
         
    
        
            | 
                5/20/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.00
             |           
            
                10.00
             |               
            
                9.50
             |                           
            
                9.60
             | 
            
                9.60
             |                     
            
                6.29
             |                                 
            
                36,220
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/19/2011
             | 
            
                -0.10 / -1.03%
             |             
            
                9.60
             |           
            
                9.70
             |               
            
                9.60
             |                           
            
                9.60
             | 
            
                9.60
             |                     
            
                6.29
             |                                 
            
                14,470
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2011
             | 
            
                -0.10 / -1.02%
             |             
            
                10.20
             |           
            
                10.20
             |               
            
                9.70
             |                           
            
                9.70
             | 
            
                9.70
             |                     
            
                6.35
             |                                 
            
                15,860
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/17/2011
             | 
            
                -0.10 / -1.01%
             |             
            
                9.90
             |           
            
                10.00
             |               
            
                9.80
             |                           
            
                9.80
             | 
            
                9.80
             |                     
            
                6.42
             |                                 
            
                12,750
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2011
             | 
            
                -0.10 / -1.00%
             |             
            
                9.90
             |           
            
                10.00
             |               
            
                9.90
             |                           
            
                9.90
             | 
            
                9.90
             |                     
            
                6.48
             |                                 
            
                22,590
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/13/2011
             | 
            
                -0.10 / -0.99%
             |             
            
                10.00
             |           
            
                10.10
             |               
            
                10.00
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                6.55
             |                                 
            
                13,070
             |            
            
                 
             |                                       
         
    
        
            | 
                5/12/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.00
             |           
            
                10.10
             |               
            
                10.00
             |                           
            
                10.10
             | 
            
                10.10
             |                     
            
                6.61
             |                                 
            
                10,700
             |  
            
                 
             |                                                              
             
    
         
    
    
 |