| 
			 
				
					
						
    
        
            | 
                 
                    Closing price on 10/6/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    6.20 | 
                 
                
                    | High | 
                    6.40 | 
                 
                
                    | Low | 
                    6.20 | 
                     
                
                    | Volume | 
                    239,600 | 
                                 
                
                    | Split-adjusted Price | 
                    6.40 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PSI Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                10/6/2011
             | 
            
                +0.20 / +3.23%
             |             
            
                6.20
             |           
            
                6.40
             |               
            
                6.20
             |                           
            
                6.40
             | 
            
                6.40
             |                     
            
                6.40
             |                                 
            
                239,600
             |            
            
                 
             |                                       
         
    
        
            | 
                10/5/2011
             | 
            
                0.00 / 0.00%
             |             
            
                6.30
             |           
            
                6.40
             |               
            
                6.10
             |                           
            
                6.20
             | 
            
                6.20
             |                     
            
                6.20
             |                                 
            
                135,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/4/2011
             | 
            
                +0.10 / +1.64%
             |             
            
                6.20
             |           
            
                6.20
             |               
            
                6.00
             |                           
            
                6.20
             | 
            
                6.20
             |                     
            
                6.20
             |                                 
            
                207,600
             |            
            
                 
             |                                       
         
    
        
            | 
                10/3/2011
             | 
            
                -0.10 / -1.61%
             |             
            
                6.40
             |           
            
                6.40
             |               
            
                6.00
             |                           
            
                6.10
             | 
            
                6.10
             |                     
            
                6.10
             |                                 
            
                92,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/30/2011
             | 
            
                -0.30 / -4.62%
             |             
            
                6.50
             |           
            
                6.70
             |               
            
                6.20
             |                           
            
                6.20
             | 
            
                6.20
             |                     
            
                6.20
             |                                 
            
                167,700
             |            
            
                 
             |                                       
         
    
        
            | 
                9/29/2011
             | 
            
                -0.20 / -2.99%
             |             
            
                6.70
             |           
            
                6.70
             |               
            
                6.40
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                6.50
             |                                 
            
                331,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/28/2011
             | 
            
                -0.10 / -1.47%
             |             
            
                7.00
             |           
            
                7.00
             |               
            
                6.70
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                6.70
             |                                 
            
                123,600
             |            
            
                 
             |                                       
         
    
        
            | 
                9/27/2011
             | 
            
                +0.10 / +1.49%
             |             
            
                6.80
             |           
            
                6.90
             |               
            
                6.70
             |                           
            
                6.80
             | 
            
                6.80
             |                     
            
                6.80
             |                                 
            
                160,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/26/2011
             | 
            
                -0.20 / -2.90%
             |             
            
                7.00
             |           
            
                7.10
             |               
            
                6.70
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                6.70
             |                                 
            
                83,400
             |            
            
                 
             |                                       
         
    
        
            | 
                9/23/2011
             | 
            
                -0.10 / -1.43%
             |             
            
                6.80
             |           
            
                7.00
             |               
            
                6.80
             |                           
            
                6.90
             | 
            
                6.90
             |                     
            
                6.90
             |                                 
            
                151,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/22/2011
             | 
            
                0.00 / 0.00%
             |             
            
                6.80
             |           
            
                7.10
             |               
            
                6.70
             |                           
            
                7.00
             | 
            
                7.00
             |                     
            
                7.00
             |                                 
            
                164,600
             |            
            
                 
             |                                       
         
    
        
            | 
                9/21/2011
             | 
            
                +0.10 / +1.45%
             |             
            
                7.00
             |           
            
                7.20
             |               
            
                6.70
             |                           
            
                7.00
             | 
            
                7.00
             |                     
            
                7.00
             |                                 
            
                193,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/20/2011
             | 
            
                -0.30 / -4.17%
             |             
            
                7.10
             |           
            
                7.30
             |               
            
                6.80
             |                           
            
                6.90
             | 
            
                6.90
             |                     
            
                6.90
             |                                 
            
                322,800
             |            
            
                 
             |                                       
         
    
        
            | 
                9/19/2011
             | 
            
                +0.30 / +4.35%
             |             
            
                7.00
             |           
            
                7.30
             |               
            
                6.90
             |                           
            
                7.20
             | 
            
                7.20
             |                     
            
                7.20
             |                                 
            
                229,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/16/2011
             | 
            
                -0.30 / -4.17%
             |             
            
                7.20
             |           
            
                7.20
             |               
            
                6.80
             |                           
            
                6.90
             | 
            
                6.90
             |                     
            
                6.90
             |                                 
            
                240,600
             |            
            
                 
             |                                       
         
    
        
            | 
                9/15/2011
             | 
            
                -0.20 / -2.70%
             |             
            
                7.20
             |           
            
                7.50
             |               
            
                7.20
             |                           
            
                7.20
             | 
            
                7.20
             |                     
            
                7.20
             |                                 
            
                364,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/14/2011
             | 
            
                -0.10 / -1.33%
             |             
            
                7.60
             |           
            
                8.00
             |               
            
                7.30
             |                           
            
                7.40
             | 
            
                7.40
             |                     
            
                7.40
             |                                 
            
                608,600
             |            
            
                 
             |                                       
         
    
        
            | 
                9/13/2011
             | 
            
                +0.10 / +1.35%
             |             
            
                7.50
             |           
            
                7.80
             |               
            
                7.30
             |                           
            
                7.50
             | 
            
                7.50
             |                     
            
                7.50
             |                                 
            
                959,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/12/2011
             | 
            
                +0.20 / +2.78%
             |             
            
                7.00
             |           
            
                7.50
             |               
            
                7.00
             |                           
            
                7.40
             | 
            
                7.40
             |                     
            
                7.40
             |                                 
            
                598,100
             |            
            
                 
             |                                       
         
    
        
            | 
                9/9/2011
             | 
            
                +0.30 / +4.35%
             |             
            
                6.90
             |           
            
                7.50
             |               
            
                6.80
             |                           
            
                7.20
             | 
            
                7.20
             |                     
            
                7.20
             |                                 
            
                430,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/8/2011
             | 
            
                -0.20 / -2.82%
             |             
            
                7.20
             |           
            
                7.40
             |               
            
                6.90
             |                           
            
                6.90
             | 
            
                6.90
             |                     
            
                6.90
             |                                 
            
                576,700
             |            
            
                 
             |                                       
         
    
        
            | 
                9/7/2011
             | 
            
                +0.40 / +5.97%
             |             
            
                6.90
             |           
            
                7.10
             |               
            
                6.90
             |                           
            
                7.10
             | 
            
                7.10
             |                     
            
                7.10
             |                                 
            
                406,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/6/2011
             | 
            
                -0.30 / -4.29%
             |             
            
                6.90
             |           
            
                6.90
             |               
            
                6.70
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                6.70
             |                                 
            
                563,400
             |            
            
                 
             |                                       
         
    
        
            | 
                9/5/2011
             | 
            
                -0.40 / -5.41%
             |             
            
                7.80
             |           
            
                7.80
             |               
            
                6.90
             |                           
            
                7.00
             | 
            
                7.00
             |                     
            
                7.00
             |                                 
            
                269,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/1/2011
             | 
            
                +0.30 / +4.23%
             |             
            
                7.30
             |           
            
                7.40
             |               
            
                7.20
             |                           
            
                7.40
             | 
            
                7.40
             |                     
            
                7.40
             |                                 
            
                447,100
             |            
            
                 
             |                                       
         
    
        
            | 
                8/31/2011
             | 
            
                +0.40 / +5.97%
             |             
            
                6.80
             |           
            
                7.10
             |               
            
                6.60
             |                           
            
                7.10
             | 
            
                7.10
             |                     
            
                7.10
             |                                 
            
                773,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/30/2011
             | 
            
                +0.30 / +4.69%
             |             
            
                6.70
             |           
            
                6.70
             |               
            
                6.50
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                6.70
             |                                 
            
                488,600
             |            
            
                 
             |                                       
         
    
        
            | 
                8/29/2011
             | 
            
                +0.50 / +8.47%
             |             
            
                6.10
             |           
            
                6.40
             |               
            
                6.00
             |                           
            
                6.40
             | 
            
                6.40
             |                     
            
                6.40
             |                                 
            
                425,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/26/2011
             | 
            
                -0.20 / -3.28%
             |             
            
                6.00
             |           
            
                6.10
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.90
             |                     
            
                5.90
             |                                 
            
                105,100
             |            
            
                 
             |                                       
         
    
        
            | 
                8/25/2011
             | 
            
                +0.10 / +1.67%
             |             
            
                6.20
             |           
            
                6.20
             |               
            
                5.90
             |                           
            
                6.10
             | 
            
                6.10
             |                     
            
                6.10
             |                                 
            
                278,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 | 
					 
				  | 
			 
				 | 
			 
		  | 
	 
 
		     | 
		    
			    
	
		
			
				 | 
			 
				 | 
			 
				
					
						| 
 Market Update 
        
            
                Last updated at 3:10:02 PM
                                                                
            
            
            
            
        
        
     
 
 | 
					 
				  | 
			 
				 | 
			 
		  | 
	 
   
		     |