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            | 
                 
                    Closing price on 4/23/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    6.00 | 
                 
                
                    | High | 
                    6.10 | 
                 
                
                    | Low | 
                    5.90 | 
                     
                
                    | Volume | 
                    194,000 | 
                                 
                
                    | Split-adjusted Price | 
                    6.00 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PSI Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                4/23/2012
             | 
            
                +0.20 / +3.45%
             |             
            
                6.00
             |           
            
                6.10
             |               
            
                5.90
             |                           
            
                6.00
             | 
            
                6.00
             |                     
            
                6.00
             |                                 
            
                194,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/20/2012
             | 
            
                -0.20 / -3.33%
             |             
            
                5.80
             |           
            
                6.20
             |               
            
                5.80
             |                           
            
                5.80
             | 
            
                5.80
             |                     
            
                5.80
             |                                 
            
                290,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/19/2012
             | 
            
                -0.30 / -4.76%
             |             
            
                6.00
             |           
            
                6.20
             |               
            
                5.80
             |                           
            
                6.00
             | 
            
                6.00
             |                     
            
                6.00
             |                                 
            
                278,200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/18/2012
             | 
            
                -0.10 / -1.56%
             |             
            
                6.40
             |           
            
                6.50
             |               
            
                6.20
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                6.30
             |                                 
            
                505,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/17/2012
             | 
            
                -0.30 / -4.48%
             |             
            
                6.70
             |           
            
                6.80
             |               
            
                6.40
             |                           
            
                6.40
             | 
            
                6.40
             |                     
            
                6.40
             |                                 
            
                346,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/16/2012
             | 
            
                +0.20 / +3.08%
             |             
            
                6.30
             |           
            
                6.80
             |               
            
                6.30
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                6.70
             |                                 
            
                386,225
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/13/2012
             | 
            
                0.00 / 0.00%
             |             
            
                6.50
             |           
            
                6.90
             |               
            
                6.30
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                6.50
             |                                 
            
                759,525
             |            
            
                 
             |                                       
         
    
        
            | 
                4/12/2012
             | 
            
                -0.10 / -1.52%
             |             
            
                6.90
             |           
            
                6.90
             |               
            
                6.40
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                6.50
             |                                 
            
                682,090
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/11/2012
             | 
            
                +0.10 / +1.54%
             |             
            
                6.50
             |           
            
                6.80
             |               
            
                6.50
             |                           
            
                6.60
             | 
            
                6.60
             |                     
            
                6.60
             |                                 
            
                502,425
             |            
            
                 
             |                                       
         
    
        
            | 
                4/10/2012
             | 
            
                -0.20 / -2.99%
             |             
            
                6.80
             |           
            
                7.00
             |               
            
                6.50
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                6.50
             |                                 
            
                619,925
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/9/2012
             | 
            
                +0.20 / +3.08%
             |             
            
                6.50
             |           
            
                6.80
             |               
            
                6.50
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                6.70
             |                                 
            
                399,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/6/2012
             | 
            
                0.00 / 0.00%
             |             
            
                6.70
             |           
            
                6.80
             |               
            
                6.40
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                6.50
             |                                 
            
                872,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/5/2012
             | 
            
                +0.40 / +6.56%
             |             
            
                5.80
             |           
            
                6.50
             |               
            
                5.80
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                6.50
             |                                 
            
                635,870
             |            
            
                 
             |                                       
         
    
        
            | 
                4/4/2012
             | 
            
                -0.10 / -1.61%
             |             
            
                6.40
             |           
            
                6.50
             |               
            
                6.00
             |                           
            
                6.10
             | 
            
                6.10
             |                     
            
                6.10
             |                                 
            
                285,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/3/2012
             | 
            
                +0.40 / +6.90%
             |             
            
                5.80
             |           
            
                6.20
             |               
            
                5.80
             |                           
            
                6.20
             | 
            
                6.20
             |                     
            
                6.20
             |                                 
            
                426,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/30/2012
             | 
            
                -0.40 / -6.45%
             |             
            
                6.40
             |           
            
                6.40
             |               
            
                5.80
             |                           
            
                5.80
             | 
            
                5.80
             |                     
            
                5.80
             |                                 
            
                574,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/29/2012
             | 
            
                -0.30 / -4.62%
             |             
            
                6.30
             |           
            
                6.50
             |               
            
                6.20
             |                           
            
                6.20
             | 
            
                6.20
             |                     
            
                6.20
             |                                 
            
                452,300
             |            
            
                 
             |                                       
         
    
        
            | 
                3/28/2012
             | 
            
                -0.20 / -2.99%
             |             
            
                6.30
             |           
            
                6.60
             |               
            
                6.30
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                6.50
             |                                 
            
                1,118,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/27/2012
             | 
            
                -0.30 / -4.29%
             |             
            
                7.00
             |           
            
                7.20
             |               
            
                6.70
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                6.70
             |                                 
            
                459,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/26/2012
             | 
            
                0.00 / 0.00%
             |             
            
                7.30
             |           
            
                7.40
             |               
            
                6.80
             |                           
            
                7.00
             | 
            
                7.00
             |                     
            
                7.00
             |                                 
            
                803,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/23/2012
             | 
            
                +0.40 / +6.06%
             |             
            
                6.90
             |           
            
                7.00
             |               
            
                6.70
             |                           
            
                7.00
             | 
            
                7.00
             |                     
            
                7.00
             |                                 
            
                1,093,200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/22/2012
             | 
            
                +0.40 / +6.45%
             |             
            
                6.60
             |           
            
                6.60
             |               
            
                6.30
             |                           
            
                6.60
             | 
            
                6.60
             |                     
            
                6.60
             |                                 
            
                2,080,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/21/2012
             | 
            
                +0.40 / +6.90%
             |             
            
                6.20
             |           
            
                6.20
             |               
            
                6.20
             |                           
            
                6.20
             | 
            
                6.20
             |                     
            
                6.20
             |                                 
            
                215,200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/20/2012
             | 
            
                +0.30 / +5.45%
             |             
            
                5.80
             |           
            
                5.80
             |               
            
                5.80
             |                           
            
                5.80
             | 
            
                5.80
             |                     
            
                5.80
             |                                 
            
                144,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/19/2012
             | 
            
                +0.30 / +5.77%
             |             
            
                5.50
             |           
            
                5.50
             |               
            
                5.50
             |                           
            
                5.50
             | 
            
                5.50
             |                     
            
                5.50
             |                                 
            
                233,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/16/2012
             | 
            
                +0.10 / +1.96%
             |             
            
                5.20
             |           
            
                5.20
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                5.20
             |                                 
            
                114,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/15/2012
             | 
            
                +0.40 / +8.51%
             |             
            
                4.70
             |           
            
                5.10
             |               
            
                4.60
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                5.10
             |                                 
            
                447,100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/14/2012
             | 
            
                -0.20 / -4.08%
             |             
            
                5.00
             |           
            
                5.10
             |               
            
                4.70
             |                           
            
                4.70
             | 
            
                4.70
             |                     
            
                4.70
             |                                 
            
                322,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/13/2012
             | 
            
                +0.10 / +2.08%
             |             
            
                4.80
             |           
            
                5.00
             |               
            
                4.70
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                4.90
             |                                 
            
                184,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/12/2012
             | 
            
                -0.50 / -9.43%
             |             
            
                5.00
             |           
            
                5.00
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                4.80
             |                                 
            
                435,500
             |  
            
                 
             |                                                              
             
    
         
    
    
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 Market Update 
        
            
                Last updated at 3:10:02 PM
                                                                
            
            
            
            
        
        
     
 
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