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            | 
                 
                    Closing price on 4/10/2012
                 
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             | 
         
         
 
    
        
                      
                
                    | Open | 
                    6.80 | 
                 
                
                    | High | 
                    7.00 | 
                 
                
                    | Low | 
                    6.50 | 
                     
                
                    | Volume | 
                    619,925 | 
                                 
                
                    | Split-adjusted Price | 
                    6.50 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PSI Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                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
             |            
            
                 
             |                                       
         
    
        
            | 
                3/9/2012
             | 
            
                +0.20 / +3.92%
             |             
            
                5.10
             |           
            
                5.40
             |               
            
                5.00
             |                           
            
                5.30
             | 
            
                5.30
             |                     
            
                5.30
             |                                 
            
                408,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/8/2012
             | 
            
                -0.50 / -8.93%
             |             
            
                5.40
             |           
            
                5.60
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                5.10
             |                                 
            
                671,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/7/2012
             | 
            
                +0.30 / +5.66%
             |             
            
                5.50
             |           
            
                5.60
             |               
            
                5.10
             |                           
            
                5.60
             | 
            
                5.60
             |                     
            
                5.60
             |                                 
            
                571,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/6/2012
             | 
            
                +0.30 / +6.00%
             |             
            
                5.30
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.30
             | 
            
                5.30
             |                     
            
                5.30
             |                                 
            
                1,486,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/5/2012
             | 
            
                +0.30 / +6.38%
             |             
            
                5.00
             |           
            
                5.00
             |               
            
                5.00
             |                           
            
                5.00
             | 
            
                5.00
             |                     
            
                5.00
             |                                 
            
                113,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/2/2012
             | 
            
                +0.10 / +2.17%
             |             
            
                4.50
             |           
            
                4.70
             |               
            
                4.40
             |                           
            
                4.70
             | 
            
                4.70
             |                     
            
                4.70
             |                                 
            
                525,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/1/2012
             | 
            
                +0.10 / +2.22%
             |             
            
                4.40
             |           
            
                4.60
             |               
            
                4.20
             |                           
            
                4.60
             | 
            
                4.60
             |                     
            
                4.60
             |                                 
            
                436,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/29/2012
             | 
            
                +0.30 / +7.14%
             |             
            
                4.30
             |           
            
                4.50
             |               
            
                4.10
             |                           
            
                4.50
             | 
            
                4.50
             |                     
            
                4.50
             |                                 
            
                206,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/28/2012
             | 
            
                -0.10 / -2.33%
             |             
            
                4.50
             |           
            
                4.60
             |               
            
                4.20
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                4.20
             |                                 
            
                313,600
             |  
            
                 
             |                                                              
             
    
         
    
    
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						| 
 Market Update 
        
            
                Last updated at 3:10:02 PM
                                                                
            
            
            
            
        
        
     
 
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