| 
                 
                    Closing price on 3/23/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    15.20 | 
                 
                
                    | High | 
                    16.20 | 
                 
                
                    | Low | 
                    15.20 | 
                     
                
                    | Volume | 
                    574,800 | 
                                 
                
                    | Split-adjusted Price | 
                    3.35 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PPS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/23/2012
             | 
            
                +1.00 / +6.58%
             |             
            
                15.20
             |           
            
                16.20
             |               
            
                15.20
             |                           
            
                16.20
             | 
            
                16.20
             |                     
            
                3.35
             |                                 
            
                574,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/22/2012
             | 
            
                -0.10 / -0.65%
             |             
            
                15.20
             |           
            
                15.80
             |               
            
                14.80
             |                           
            
                15.20
             | 
            
                15.20
             |                     
            
                3.15
             |                                 
            
                665,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/21/2012
             | 
            
                +0.80 / +5.52%
             |             
            
                14.60
             |           
            
                15.30
             |               
            
                14.40
             |                           
            
                15.30
             | 
            
                15.30
             |                     
            
                3.17
             |                                 
            
                468,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/20/2012
             | 
            
                +0.60 / +4.32%
             |             
            
                14.30
             |           
            
                14.50
             |               
            
                13.90
             |                           
            
                14.50
             | 
            
                14.50
             |                     
            
                3.00
             |                                 
            
                412,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/19/2012
             | 
            
                +0.90 / +6.92%
             |             
            
                13.30
             |           
            
                13.90
             |               
            
                13.20
             |                           
            
                13.90
             | 
            
                13.90
             |                     
            
                2.88
             |                                 
            
                273,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/16/2012
             | 
            
                -0.20 / -1.52%
             |             
            
                12.60
             |           
            
                13.10
             |               
            
                12.40
             |                           
            
                13.00
             | 
            
                13.00
             |                     
            
                2.69
             |                                 
            
                460,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/15/2012
             | 
            
                +0.80 / +6.45%
             |             
            
                12.50
             |           
            
                13.30
             |               
            
                11.80
             |                           
            
                13.20
             | 
            
                13.20
             |                     
            
                2.73
             |                                 
            
                722,900
             |            
            
                 
             |                                       
         
    
        
            | 
                3/14/2012
             | 
            
                -0.30 / -2.36%
             |             
            
                12.70
             |           
            
                12.90
             |               
            
                12.40
             |                           
            
                12.40
             | 
            
                12.40
             |                     
            
                2.57
             |                                 
            
                278,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/13/2012
             | 
            
                +0.40 / +3.25%
             |             
            
                12.40
             |           
            
                12.70
             |               
            
                12.40
             |                           
            
                12.70
             | 
            
                12.70
             |                     
            
                2.63
             |                                 
            
                208,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/12/2012
             | 
            
                +0.50 / +4.24%
             |             
            
                12.00
             |           
            
                12.40
             |               
            
                12.00
             |                           
            
                12.30
             | 
            
                12.30
             |                     
            
                2.55
             |                                 
            
                133,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/9/2012
             | 
            
                -0.40 / -3.28%
             |             
            
                12.00
             |           
            
                12.30
             |               
            
                11.70
             |                           
            
                11.80
             | 
            
                11.80
             |                     
            
                2.44
             |                                 
            
                235,500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/8/2012
             | 
            
                -0.70 / -5.43%
             |             
            
                12.00
             |           
            
                12.50
             |               
            
                12.00
             |                           
            
                12.20
             | 
            
                12.20
             |                     
            
                2.53
             |                                 
            
                237,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/7/2012
             | 
            
                -0.20 / -1.53%
             |             
            
                13.40
             |           
            
                13.40
             |               
            
                12.80
             |                           
            
                12.90
             | 
            
                12.90
             |                     
            
                2.67
             |                                 
            
                191,200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/6/2012
             | 
            
                -1.20 / -8.39%
             |             
            
                13.80
             |           
            
                14.30
             |               
            
                13.10
             |                           
            
                13.10
             | 
            
                13.10
             |                     
            
                2.71
             |                                 
            
                664,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/5/2012
             | 
            
                +0.60 / +4.38%
             |             
            
                13.70
             |           
            
                14.30
             |               
            
                13.70
             |                           
            
                14.30
             | 
            
                14.30
             |                     
            
                2.96
             |                                 
            
                513,700
             |            
            
                 
             |                                       
         
    
        
            | 
                3/2/2012
             | 
            
                +0.30 / +2.24%
             |             
            
                13.40
             |           
            
                13.70
             |               
            
                13.30
             |                           
            
                13.70
             | 
            
                13.70
             |                     
            
                2.84
             |                                 
            
                281,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/1/2012
             | 
            
                -0.10 / -0.74%
             |             
            
                13.80
             |           
            
                13.80
             |               
            
                13.30
             |                           
            
                13.40
             | 
            
                13.40
             |                     
            
                2.77
             |                                 
            
                278,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/29/2012
             | 
            
                +0.50 / +3.85%
             |             
            
                13.20
             |           
            
                13.50
             |               
            
                13.20
             |                           
            
                13.50
             | 
            
                13.50
             |                     
            
                2.80
             |                                 
            
                408,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/28/2012
             | 
            
                +0.60 / +4.84%
             |             
            
                12.20
             |           
            
                13.00
             |               
            
                12.00
             |                           
            
                13.00
             | 
            
                13.00
             |                     
            
                2.69
             |                                 
            
                399,300
             |            
            
                 
             |                                       
         
    
        
            | 
                2/27/2012
             | 
            
                -0.10 / -0.80%
             |             
            
                12.30
             |           
            
                12.60
             |               
            
                11.80
             |                           
            
                12.40
             | 
            
                12.40
             |                     
            
                2.57
             |                                 
            
                260,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/24/2012
             | 
            
                +0.20 / +1.63%
             |             
            
                12.20
             |           
            
                12.70
             |               
            
                12.10
             |                           
            
                12.50
             | 
            
                12.50
             |                     
            
                2.59
             |                                 
            
                319,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/23/2012
             | 
            
                -0.50 / -3.91%
             |             
            
                12.60
             |           
            
                12.70
             |               
            
                12.10
             |                           
            
                12.30
             | 
            
                12.30
             |                     
            
                2.55
             |                                 
            
                294,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/22/2012
             | 
            
                +0.50 / +4.07%
             |             
            
                12.30
             |           
            
                12.90
             |               
            
                11.80
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                2.65
             |                                 
            
                222,300
             |            
            
                 
             |                                       
         
    
        
            | 
                2/21/2012
             | 
            
                +0.70 / +6.03%
             |             
            
                12.40
             |           
            
                12.40
             |               
            
                12.10
             |                           
            
                12.30
             | 
            
                12.30
             |                     
            
                2.55
             |                                 
            
                311,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/20/2012
             | 
            
                +0.70 / +6.42%
             |             
            
                11.60
             |           
            
                11.60
             |               
            
                11.60
             |                           
            
                11.60
             | 
            
                11.60
             |                     
            
                2.40
             |                                 
            
                144,800
             |            
            
                 
             |                                       
         
    
        
            | 
                2/17/2012
             | 
            
                +0.50 / +4.81%
             |             
            
                10.80
             |           
            
                10.90
             |               
            
                10.80
             |                           
            
                10.90
             | 
            
                10.90
             |                     
            
                2.26
             |                                 
            
                211,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/16/2012
             | 
            
                +0.60 / +6.12%
             |             
            
                9.80
             |           
            
                10.40
             |               
            
                9.80
             |                           
            
                10.40
             | 
            
                10.40
             |                     
            
                2.15
             |                                 
            
                153,500
             |            
            
                 
             |                                       
         
    
        
            | 
                2/15/2012
             | 
            
                -0.30 / -2.97%
             |             
            
                9.90
             |           
            
                10.00
             |               
            
                9.60
             |                           
            
                9.80
             | 
            
                9.80
             |                     
            
                2.03
             |                                 
            
                89,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/14/2012
             | 
            
                +0.70 / +7.45%
             |             
            
                9.70
             |           
            
                10.10
             |               
            
                9.70
             |                           
            
                10.10
             | 
            
                10.10
             |                     
            
                2.09
             |                                 
            
                121,100
             |            
            
                 
             |                                       
         
    
        
            | 
                2/13/2012
             | 
            
                -0.20 / -2.08%
             |             
            
                10.00
             |           
            
                10.00
             |               
            
                9.30
             |                           
            
                9.40
             | 
            
                9.40
             |                     
            
                1.95
             |                                 
            
                94,800
             |  
            
                 
             |                                                              
             
    
         
    
    
 |