| 
                 
                    Closing price on 4/17/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    8.00 | 
                 
                
                    | High | 
                    8.10 | 
                 
                
                    | Low | 
                    7.90 | 
                     
                
                    | Volume | 
                    41,580 | 
                                 
                
                    | Split-adjusted Price | 
                    6.02 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PIT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                4/17/2012
             | 
            
                +0.10 / +1.27%
             |             
            
                8.00
             |           
            
                8.10
             |               
            
                7.90
             |                           
            
                8.00
             | 
            
                8.00
             |                     
            
                6.02
             |                                 
            
                41,580
             |            
            
                 
             |                                       
         
    
        
            | 
                4/16/2012
             | 
            
                +0.00 / +0.00%
             |             
            
                7.90
             |           
            
                8.00
             |               
            
                7.80
             |                           
            
                7.90
             | 
            
                7.90
             |                     
            
                5.95
             |                                 
            
                41,580
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/13/2012
             | 
            
                +0.00 / +0.00%
             |             
            
                7.80
             |           
            
                8.00
             |               
            
                7.80
             |                           
            
                7.90
             | 
            
                7.90
             |                     
            
                5.95
             |                                 
            
                8,210
             |            
            
                 
             |                                       
         
    
        
            | 
                4/12/2012
             | 
            
                +0.10 / +1.28%
             |             
            
                7.80
             |           
            
                7.90
             |               
            
                7.70
             |                           
            
                7.90
             | 
            
                7.90
             |                     
            
                5.95
             |                                 
            
                27,470
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/11/2012
             | 
            
                +0.10 / +1.30%
             |             
            
                7.80
             |           
            
                7.80
             |               
            
                7.60
             |                           
            
                7.80
             | 
            
                7.80
             |                     
            
                5.87
             |                                 
            
                10,990
             |            
            
                 
             |                                       
         
    
        
            | 
                4/10/2012
             | 
            
                +0.30 / +4.05%
             |             
            
                7.30
             |           
            
                7.70
             |               
            
                7.30
             |                           
            
                7.70
             | 
            
                7.70
             |                     
            
                5.80
             |                                 
            
                23,970
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/9/2012
             | 
            
                -0.20 / -2.63%
             |             
            
                7.60
             |           
            
                7.60
             |               
            
                7.40
             |                           
            
                7.40
             | 
            
                7.40
             |                     
            
                5.57
             |                                 
            
                5,990
             |            
            
                 
             |                                       
         
    
        
            | 
                4/6/2012
             | 
            
                +0.10 / +1.33%
             |             
            
                7.60
             |           
            
                7.60
             |               
            
                7.60
             |                           
            
                7.60
             | 
            
                7.60
             |                     
            
                5.72
             |                                 
            
                510
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/5/2012
             | 
            
                0.00 / 0.00%
             |             
            
                7.20
             |           
            
                7.50
             |               
            
                7.20
             |                           
            
                7.50
             | 
            
                7.50
             |                     
            
                5.65
             |                                 
            
                4,260
             |            
            
                 
             |                                       
         
    
        
            | 
                4/4/2012
             | 
            
                0.00 / 0.00%
             |             
            
                7.50
             |           
            
                7.50
             |               
            
                7.50
             |                           
            
                7.50
             | 
            
                7.50
             |                     
            
                5.65
             |                                 
            
                11,670
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/3/2012
             | 
            
                -0.10 / -1.32%
             |             
            
                7.70
             |           
            
                7.70
             |               
            
                7.40
             |                           
            
                7.50
             | 
            
                7.50
             |                     
            
                5.65
             |                                 
            
                6,500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/30/2012
             | 
            
                +0.10 / +1.33%
             |             
            
                7.30
             |           
            
                7.70
             |               
            
                7.30
             |                           
            
                7.60
             | 
            
                7.60
             |                     
            
                5.72
             |                                 
            
                11,360
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/29/2012
             | 
            
                -0.20 / -2.60%
             |             
            
                7.80
             |           
            
                8.00
             |               
            
                7.50
             |                           
            
                7.50
             | 
            
                7.50
             |                     
            
                5.65
             |                                 
            
                11,370
             |            
            
                 
             |                                       
         
    
        
            | 
                3/28/2012
             | 
            
                -0.20 / -2.53%
             |             
            
                7.90
             |           
            
                7.90
             |               
            
                7.60
             |                           
            
                7.70
             | 
            
                7.70
             |                     
            
                5.80
             |                                 
            
                19,180
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/27/2012
             | 
            
                0.00 / 0.00%
             |             
            
                7.80
             |           
            
                7.90
             |               
            
                7.60
             |                           
            
                7.90
             | 
            
                7.90
             |                     
            
                5.95
             |                                 
            
                29,120
             |            
            
                 
             |                                       
         
    
        
            | 
                3/26/2012
             | 
            
                +0.10 / +1.28%
             |             
            
                8.00
             |           
            
                8.00
             |               
            
                7.60
             |                           
            
                7.90
             | 
            
                7.90
             |                     
            
                5.95
             |                                 
            
                23,050
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/23/2012
             | 
            
                0.00 / 0.00%
             |             
            
                7.70
             |           
            
                7.90
             |               
            
                7.60
             |                           
            
                7.80
             | 
            
                7.80
             |                     
            
                5.87
             |                                 
            
                15,310
             |            
            
                 
             |                                       
         
    
        
            | 
                3/22/2012
             | 
            
                0.00 / 0.00%
             |             
            
                7.50
             |           
            
                8.00
             |               
            
                7.50
             |                           
            
                7.80
             | 
            
                7.80
             |                     
            
                5.87
             |                                 
            
                5,040
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/21/2012
             | 
            
                +0.30 / +4.00%
             |             
            
                7.60
             |           
            
                7.80
             |               
            
                7.30
             |                           
            
                7.80
             | 
            
                7.80
             |                     
            
                5.87
             |                                 
            
                25,230
             |            
            
                 
             |                                       
         
    
        
            | 
                3/20/2012
             | 
            
                +0.10 / +1.35%
             |             
            
                7.40
             |           
            
                7.50
             |               
            
                7.40
             |                           
            
                7.50
             | 
            
                7.50
             |                     
            
                5.65
             |                                 
            
                1,010
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/19/2012
             | 
            
                0.00 / 0.00%
             |             
            
                7.10
             |           
            
                7.40
             |               
            
                7.10
             |                           
            
                7.40
             | 
            
                7.40
             |                     
            
                5.57
             |                                 
            
                7,850
             |            
            
                 
             |                                       
         
    
        
            | 
                3/16/2012
             | 
            
                -0.10 / -1.33%
             |             
            
                7.50
             |           
            
                7.50
             |               
            
                7.30
             |                           
            
                7.40
             | 
            
                7.40
             |                     
            
                5.57
             |                                 
            
                11,060
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/15/2012
             | 
            
                +0.10 / +1.35%
             |             
            
                7.40
             |           
            
                7.50
             |               
            
                7.40
             |                           
            
                7.50
             | 
            
                7.50
             |                     
            
                5.65
             |                                 
            
                5,930
             |            
            
                 
             |                                       
         
    
        
            | 
                3/14/2012
             | 
            
                +0.10 / +1.37%
             |             
            
                7.50
             |           
            
                7.60
             |               
            
                7.40
             |                           
            
                7.40
             | 
            
                7.40
             |                     
            
                5.57
             |                                 
            
                1,230
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/13/2012
             | 
            
                +0.00 / +0.00%
             |             
            
                7.30
             |           
            
                7.60
             |               
            
                7.30
             |                           
            
                7.30
             | 
            
                7.30
             |                     
            
                5.50
             |                                 
            
                5,190
             |            
            
                 
             |                                       
         
    
        
            | 
                3/12/2012
             | 
            
                +0.10 / +1.39%
             |             
            
                7.40
             |           
            
                7.40
             |               
            
                6.90
             |                           
            
                7.30
             | 
            
                7.30
             |                     
            
                5.50
             |                                 
            
                6,970
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/9/2012
             | 
            
                -0.30 / -4.00%
             |             
            
                7.60
             |           
            
                7.60
             |               
            
                7.20
             |                           
            
                7.20
             | 
            
                7.20
             |                     
            
                5.42
             |                                 
            
                10,030
             |            
            
                 
             |                                       
         
    
        
            | 
                3/8/2012
             | 
            
                -0.30 / -3.85%
             |             
            
                7.90
             |           
            
                7.90
             |               
            
                7.50
             |                           
            
                7.50
             | 
            
                7.50
             |                     
            
                5.65
             |                                 
            
                7,680
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/7/2012
             | 
            
                +0.10 / +1.30%
             |             
            
                7.60
             |           
            
                7.90
             |               
            
                7.60
             |                           
            
                7.80
             | 
            
                7.80
             |                     
            
                5.87
             |                                 
            
                11,550
             |            
            
                 
             |                                       
         
    
        
            | 
                3/6/2012
             | 
            
                -0.30 / -3.75%
             |             
            
                8.40
             |           
            
                8.40
             |               
            
                7.70
             |                           
            
                7.70
             | 
            
                7.70
             |                     
            
                5.80
             |                                 
            
                23,830
             |  
            
                 
             |                                                              
             
    
         
    
    
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