| 
                 
                    Closing price on 2/28/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    12.60 | 
                 
                
                    | High | 
                    12.60 | 
                 
                
                    | Low | 
                    12.00 | 
                     
                
                    | Volume | 
                    16,050 | 
                                 
                
                    | Split-adjusted Price | 
                    7.86 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PIT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                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
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/27/2011
             | 
            
                +0.20 / +1.63%
             |             
            
                12.70
             |           
            
                12.80
             |               
            
                12.40
             |                           
            
                12.50
             | 
            
                12.50
             |                     
            
                8.18
             |                                 
            
                13,800
             |            
            
                 
             |                                       
         
    
        
            | 
                1/26/2011
             | 
            
                +0.20 / +1.65%
             |             
            
                12.70
             |           
            
                12.70
             |               
            
                12.30
             |                           
            
                12.30
             | 
            
                12.30
             |                     
            
                8.05
             |                                 
            
                25,720
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/25/2011
             | 
            
                -0.30 / -2.42%
             |             
            
                12.40
             |           
            
                12.40
             |               
            
                12.10
             |                           
            
                12.10
             | 
            
                12.10
             |                     
            
                7.92
             |                                 
            
                81,900
             |            
            
                 
             |                                       
         
    
        
            | 
                1/24/2011
             | 
            
                -0.20 / -1.59%
             |             
            
                12.60
             |           
            
                12.90
             |               
            
                12.30
             |                           
            
                12.40
             | 
            
                12.40
             |                     
            
                8.12
             |                                 
            
                21,570
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/21/2011
             | 
            
                -0.10 / -0.79%
             |             
            
                13.20
             |           
            
                13.20
             |               
            
                12.60
             |                           
            
                12.60
             | 
            
                12.60
             |                     
            
                8.25
             |                                 
            
                14,440
             |            
            
                 
             |                                       
         
    
        
            | 
                1/20/2011
             | 
            
                -0.10 / -0.78%
             |             
            
                13.00
             |           
            
                13.00
             |               
            
                12.60
             |                           
            
                12.70
             | 
            
                12.70
             |                     
            
                8.32
             |                                 
            
                18,510
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/19/2011
             | 
            
                0.00 / 0.00%
             |             
            
                12.60
             |           
            
                13.40
             |               
            
                12.60
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                8.38
             |                                 
            
                14,130
             |            
            
                 
             |                                       
         
    
        
            | 
                1/18/2011
             | 
            
                -0.40 / -3.03%
             |             
            
                13.20
             |           
            
                13.50
             |               
            
                12.70
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                8.38
             |                                 
            
                21,790
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/17/2011
             | 
            
                +0.60 / +4.76%
             |             
            
                13.20
             |           
            
                13.20
             |               
            
                13.10
             |                           
            
                13.20
             | 
            
                13.20
             |                     
            
                8.64
             |                                 
            
                90,000
             |            
            
                 
             |                                       
         
    
        
            | 
                1/14/2011
             | 
            
                0.00 / 0.00%
             |             
            
                12.60
             |           
            
                12.70
             |               
            
                12.50
             |                           
            
                12.60
             | 
            
                12.60
             |                     
            
                8.25
             |                                 
            
                45,090
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/13/2011
             | 
            
                +0.10 / +0.80%
             |             
            
                12.40
             |           
            
                12.60
             |               
            
                12.40
             |                           
            
                12.60
             | 
            
                12.60
             |                     
            
                8.25
             |                                 
            
                17,380
             |            
            
                 
             |                                       
         
    
        
            | 
                1/12/2011
             | 
            
                +0.20 / +1.63%
             |             
            
                12.10
             |           
            
                12.60
             |               
            
                12.10
             |                           
            
                12.50
             | 
            
                12.50
             |                     
            
                8.18
             |                                 
            
                30,350
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/11/2011
             | 
            
                -0.40 / -3.15%
             |             
            
                12.80
             |           
            
                12.80
             |               
            
                12.30
             |                           
            
                12.30
             | 
            
                12.30
             |                     
            
                8.05
             |                                 
            
                33,700
             |            
            
                 
             |                                       
         
    
        
            | 
                1/10/2011
             | 
            
                -0.10 / -0.78%
             |             
            
                12.70
             |           
            
                12.80
             |               
            
                12.50
             |                           
            
                12.70
             | 
            
                12.70
             |                     
            
                8.32
             |                                 
            
                75,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |