| 
                 
                    Closing price on 3/18/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    11.60 | 
                 
                
                    | High | 
                    12.10 | 
                 
                
                    | Low | 
                    11.60 | 
                     
                
                    | Volume | 
                    8,400 | 
                                 
                
                    | Split-adjusted Price | 
                    7.79 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PIT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/18/2011
             | 
            
                +0.20 / +1.71%
             |             
            
                11.60
             |           
            
                12.10
             |               
            
                11.60
             |                           
            
                11.90
             | 
            
                11.90
             |                     
            
                7.79
             |                                 
            
                8,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/17/2011
             | 
            
                -0.20 / -1.68%
             |             
            
                12.00
             |           
            
                12.00
             |               
            
                11.70
             |                           
            
                11.70
             | 
            
                11.70
             |                     
            
                7.66
             |                                 
            
                11,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/16/2011
             | 
            
                +0.40 / +3.48%
             |             
            
                11.70
             |           
            
                11.90
             |               
            
                11.70
             |                           
            
                11.90
             | 
            
                11.90
             |                     
            
                7.79
             |                                 
            
                28,280
             |            
            
                 
             |                                       
         
    
        
            | 
                3/15/2011
             | 
            
                -0.30 / -2.54%
             |             
            
                11.50
             |           
            
                11.80
             |               
            
                11.50
             |                           
            
                11.50
             | 
            
                11.50
             |                     
            
                7.53
             |                                 
            
                10,030
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/14/2011
             | 
            
                -0.50 / -4.07%
             |             
            
                12.60
             |           
            
                12.60
             |               
            
                11.70
             |                           
            
                11.80
             | 
            
                11.80
             |                     
            
                7.73
             |                                 
            
                42,770
             |            
            
                 
             |                                       
         
    
        
            | 
                3/11/2011
             | 
            
                +0.50 / +4.24%
             |             
            
                12.20
             |           
            
                12.30
             |               
            
                12.00
             |                           
            
                12.30
             | 
            
                12.30
             |                     
            
                8.05
             |                                 
            
                77,950
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/10/2011
             | 
            
                +0.50 / +4.42%
             |             
            
                11.40
             |           
            
                11.80
             |               
            
                11.40
             |                           
            
                11.80
             | 
            
                11.80
             |                     
            
                7.73
             |                                 
            
                35,020
             |            
            
                 
             |                                       
         
    
        
            | 
                3/9/2011
             | 
            
                -0.30 / -2.59%
             |             
            
                11.50
             |           
            
                11.50
             |               
            
                11.10
             |                           
            
                11.30
             | 
            
                11.30
             |                     
            
                7.40
             |                                 
            
                60,310
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/8/2011
             | 
            
                +0.10 / +0.87%
             |             
            
                11.60
             |           
            
                11.70
             |               
            
                11.50
             |                           
            
                11.60
             | 
            
                11.60
             |                     
            
                7.60
             |                                 
            
                13,050
             |            
            
                 
             |                                       
         
    
        
            | 
                3/7/2011
             | 
            
                0.00 / 0.00%
             |             
            
                11.50
             |           
            
                11.50
             |               
            
                11.40
             |                           
            
                11.50
             | 
            
                11.50
             |                     
            
                7.53
             |                                 
            
                9,170
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/4/2011
             | 
            
                +0.40 / +3.60%
             |             
            
                11.10
             |           
            
                11.60
             |               
            
                11.10
             |                           
            
                11.50
             | 
            
                11.50
             |                     
            
                7.53
             |                                 
            
                25,480
             |            
            
                 
             |                                       
         
    
        
            | 
                3/3/2011
             | 
            
                -0.30 / -2.63%
             |             
            
                11.10
             |           
            
                11.50
             |               
            
                11.00
             |                           
            
                11.10
             | 
            
                11.10
             |                     
            
                7.27
             |                                 
            
                20,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/2/2011
             | 
            
                -0.50 / -4.20%
             |             
            
                11.70
             |           
            
                11.70
             |               
            
                11.40
             |                           
            
                11.40
             | 
            
                11.40
             |                     
            
                7.46
             |                                 
            
                54,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/1/2011
             | 
            
                -0.10 / -0.83%
             |             
            
                12.20
             |           
            
                12.20
             |               
            
                11.80
             |                           
            
                11.90
             | 
            
                11.90
             |                     
            
                7.79
             |                                 
            
                19,650
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/28/2011
             | 
            
                -0.20 / -1.64%
             |             
            
                12.60
             |           
            
                12.60
             |               
            
                12.00
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                7.86
             |                                 
            
                16,050
             |            
            
                 
             |                                       
         
    
        
            | 
                2/25/2011
             | 
            
                +0.10 / +0.83%
             |             
            
                12.10
             |           
            
                12.20
             |               
            
                12.00
             |                           
            
                12.20
             | 
            
                12.20
             |                     
            
                7.99
             |                                 
            
                27,240
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/24/2011
             | 
            
                +0.20 / +1.68%
             |             
            
                12.00
             |           
            
                12.20
             |               
            
                11.40
             |                           
            
                12.10
             | 
            
                12.10
             |                     
            
                7.92
             |                                 
            
                119,210
             |            
            
                 
             |                                       
         
    
        
            | 
                2/23/2011
             | 
            
                +0.20 / +1.71%
             |             
            
                11.40
             |           
            
                12.00
             |               
            
                11.40
             |                           
            
                11.90
             | 
            
                11.90
             |                     
            
                7.79
             |                                 
            
                13,460
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/22/2011
             | 
            
                +0.00 / +0.00%
             |             
            
                11.40
             |           
            
                12.00
             |               
            
                11.40
             |                           
            
                11.70
             | 
            
                11.70
             |                     
            
                7.66
             |                                 
            
                38,870
             |            
            
                 
             |                                       
         
    
        
            | 
                2/21/2011
             | 
            
                -0.60 / -4.88%
             |             
            
                11.90
             |           
            
                11.90
             |               
            
                11.70
             |                           
            
                11.70
             | 
            
                11.70
             |                     
            
                7.66
             |                                 
            
                94,410
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/18/2011
             | 
            
                -0.20 / -1.60%
             |             
            
                12.30
             |           
            
                12.60
             |               
            
                12.20
             |                           
            
                12.30
             | 
            
                12.30
             |                     
            
                8.05
             |                                 
            
                51,040
             |            
            
                 
             |                                       
         
    
        
            | 
                2/17/2011
             | 
            
                -0.10 / -0.79%
             |             
            
                12.60
             |           
            
                12.60
             |               
            
                12.40
             |                           
            
                12.50
             | 
            
                12.50
             |                     
            
                8.18
             |                                 
            
                17,130
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/16/2011
             | 
            
                +0.10 / +0.80%
             |             
            
                12.40
             |           
            
                12.80
             |               
            
                12.40
             |                           
            
                12.60
             | 
            
                12.60
             |                     
            
                8.25
             |                                 
            
                15,550
             |            
            
                 
             |                                       
         
    
        
            | 
                2/15/2011
             | 
            
                +0.10 / +0.81%
             |             
            
                12.40
             |           
            
                12.60
             |               
            
                12.40
             |                           
            
                12.50
             | 
            
                12.50
             |                     
            
                8.18
             |                                 
            
                16,710
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/14/2011
             | 
            
                0.00 / 0.00%
             |             
            
                12.80
             |           
            
                12.80
             |               
            
                12.40
             |                           
            
                12.40
             | 
            
                12.40
             |                     
            
                8.12
             |                                 
            
                23,350
             |            
            
                 
             |                                       
         
    
        
            | 
                2/11/2011
             | 
            
                0.00 / 0.00%
             |             
            
                12.50
             |           
            
                12.50
             |               
            
                12.30
             |                           
            
                12.40
             | 
            
                12.40
             |                     
            
                8.12
             |                                 
            
                13,060
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/10/2011
             | 
            
                0.00 / 0.00%
             |             
            
                12.40
             |           
            
                12.60
             |               
            
                12.30
             |                           
            
                12.40
             | 
            
                12.40
             |                     
            
                8.12
             |                                 
            
                38,390
             |            
            
                 
             |                                       
         
    
        
            | 
                2/9/2011
             | 
            
                -0.20 / -1.59%
             |             
            
                12.60
             |           
            
                12.80
             |               
            
                12.40
             |                           
            
                12.40
             | 
            
                12.40
             |                     
            
                8.12
             |                                 
            
                46,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/8/2011
             | 
            
                +0.20 / +1.61%
             |             
            
                12.70
             |           
            
                12.70
             |               
            
                12.50
             |                           
            
                12.60
             | 
            
                12.60
             |                     
            
                8.25
             |                                 
            
                12,120
             |            
            
                 
             |                                       
         
    
        
            | 
                1/28/2011
             | 
            
                -0.10 / -0.80%
             |             
            
                12.30
             |           
            
                12.60
             |               
            
                12.30
             |                           
            
                12.40
             | 
            
                12.40
             |                     
            
                8.12
             |                                 
            
                21,080
             |  
            
                 
             |                                                              
             
    
         
    
    
 |