| 
                 
                    Closing price on 5/12/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    32.50 | 
                 
                
                    | High | 
                    33.40 | 
                 
                
                    | Low | 
                    32.50 | 
                     
                
                    | Volume | 
                    12,300 | 
                                 
                
                    | Split-adjusted Price | 
                    4.14 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NTP Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/12/2011
             | 
            
                +0.60 / +1.85%
             |             
            
                32.50
             |           
            
                33.40
             |               
            
                32.50
             |                           
            
                33.10
             | 
            
                33.10
             |                     
            
                4.14
             |                                 
            
                12,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/11/2011
             | 
            
                -1.00 / -2.99%
             |             
            
                33.30
             |           
            
                33.30
             |               
            
                32.10
             |                           
            
                32.50
             | 
            
                32.50
             |                     
            
                4.07
             |                                 
            
                8,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/10/2011
             | 
            
                +0.50 / +1.52%
             |             
            
                33.50
             |           
            
                33.50
             |               
            
                33.40
             |                           
            
                33.50
             | 
            
                33.50
             |                     
            
                4.19
             |                                 
            
                12,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/9/2011
             | 
            
                -1.00 / -2.94%
             |             
            
                34.00
             |           
            
                34.00
             |               
            
                32.70
             |                           
            
                33.00
             | 
            
                33.00
             |                     
            
                4.13
             |                                 
            
                11,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/6/2011
             | 
            
                -1.00 / -2.86%
             |             
            
                34.50
             |           
            
                34.50
             |               
            
                34.00
             |                           
            
                34.00
             | 
            
                34.00
             |                     
            
                4.25
             |                                 
            
                4,200
             |            
            
                 
             |                                       
         
    
        
            | 
                5/5/2011
             | 
            
                -1.00 / -2.78%
             |             
            
                35.80
             |           
            
                35.90
             |               
            
                34.00
             |                           
            
                35.00
             | 
            
                35.00
             |                     
            
                4.38
             |                                 
            
                4,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/4/2011
             | 
            
                -0.50 / -1.37%
             |             
            
                36.50
             |           
            
                36.50
             |               
            
                35.00
             |                           
            
                36.00
             | 
            
                36.00
             |                     
            
                4.50
             |                                 
            
                4,900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/29/2011
             | 
            
                -0.30 / -0.82%
             |             
            
                36.50
             |           
            
                36.50
             |               
            
                36.40
             |                           
            
                36.50
             | 
            
                36.50
             |                     
            
                4.57
             |                                 
            
                1,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/28/2011
             | 
            
                0.00 / 0.00%
             |             
            
                37.40
             |           
            
                37.40
             |               
            
                36.50
             |                           
            
                36.80
             | 
            
                36.80
             |                     
            
                4.60
             |                                 
            
                17,200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/27/2011
             | 
            
                0.00 / 0.00%
             |             
            
                36.80
             |           
            
                37.00
             |               
            
                36.60
             |                           
            
                36.80
             | 
            
                36.80
             |                     
            
                4.60
             |                                 
            
                2,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/26/2011
             | 
            
                -1.10 / -2.90%
             |             
            
                37.60
             |           
            
                37.60
             |               
            
                36.80
             |                           
            
                36.80
             | 
            
                36.80
             |                     
            
                4.60
             |                                 
            
                7,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/25/2011
             | 
            
                +0.10 / +0.26%
             |             
            
                37.90
             |           
            
                37.90
             |               
            
                37.90
             |                           
            
                37.90
             | 
            
                37.90
             |                     
            
                4.74
             |                                 
            
                3,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/22/2011
             | 
            
                -0.50 / -1.31%
             |             
            
                38.00
             |           
            
                38.00
             |               
            
                37.80
             |                           
            
                37.80
             | 
            
                37.80
             |                     
            
                4.73
             |                                 
            
                2,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/21/2011
             | 
            
                -0.60 / -1.54%
             |             
            
                38.50
             |           
            
                38.50
             |               
            
                38.00
             |                           
            
                38.30
             | 
            
                38.30
             |                     
            
                4.79
             |                                 
            
                2,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/20/2011
             | 
            
                +0.40 / +1.04%
             |             
            
                39.00
             |           
            
                39.00
             |               
            
                38.50
             |                           
            
                38.90
             | 
            
                38.90
             |                     
            
                4.87
             |                                 
            
                700
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2011
             | 
            
                -0.50 / -1.28%
             |             
            
                38.00
             |           
            
                38.50
             |               
            
                38.00
             |                           
            
                38.50
             | 
            
                38.50
             |                     
            
                4.82
             |                                 
            
                800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/18/2011
             | 
            
                -0.90 / -2.26%
             |             
            
                40.60
             |           
            
                42.60
             |               
            
                38.60
             |                           
            
                39.00
             | 
            
                39.00
             |                     
            
                4.88
             |                                 
            
                31,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/15/2011
             | 
            
                +2.00 / +5.28%
             |             
            
                39.90
             |           
            
                39.90
             |               
            
                39.90
             |                           
            
                39.90
             | 
            
                39.90
             |                     
            
                4.99
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/14/2011
             | 
            
                -0.10 / -0.26%
             |             
            
                40.50
             |           
            
                40.50
             |               
            
                37.90
             |                           
            
                37.90
             | 
            
                37.90
             |                     
            
                4.74
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/13/2011
             | 
            
                0.00 / 0.00%
             |             
            
                38.00
             |           
            
                38.10
             |               
            
                38.00
             |                           
            
                38.00
             | 
            
                38.00
             |                     
            
                4.75
             |                                 
            
                9,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/8/2011
             | 
            
                -0.50 / -1.30%
             |             
            
                38.50
             |           
            
                38.50
             |               
            
                38.00
             |                           
            
                38.00
             | 
            
                38.00
             |                     
            
                4.75
             |                                 
            
                1,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/7/2011
             | 
            
                -0.50 / -1.28%
             |             
            
                39.00
             |           
            
                39.00
             |               
            
                38.50
             |                           
            
                38.50
             | 
            
                38.50
             |                     
            
                4.82
             |                                 
            
                21,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/6/2011
             | 
            
                -0.30 / -0.76%
             |             
            
                39.10
             |           
            
                39.10
             |               
            
                39.00
             |                           
            
                39.00
             | 
            
                39.00
             |                     
            
                4.88
             |                                 
            
                9,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/5/2011
             | 
            
                -0.20 / -0.51%
             |             
            
                39.20
             |           
            
                39.30
             |               
            
                38.90
             |                           
            
                39.30
             | 
            
                39.30
             |                     
            
                4.92
             |                                 
            
                2,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/4/2011
             | 
            
                0.00 / 0.00%
             |             
            
                39.20
             |           
            
                39.50
             |               
            
                39.20
             |                           
            
                39.50
             | 
            
                39.50
             |                     
            
                4.94
             |                                 
            
                4,400
             |            
            
                 
             |                                       
         
    
        
            | 
                4/1/2011
             | 
            
                +0.50 / +1.28%
             |             
            
                39.50
             |           
            
                39.50
             |               
            
                39.50
             |                           
            
                39.50
             | 
            
                39.50
             |                     
            
                4.94
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/31/2011
             | 
            
                -0.50 / -1.27%
             |             
            
                39.00
             |           
            
                39.00
             |               
            
                39.00
             |                           
            
                39.00
             | 
            
                39.00
             |                     
            
                4.88
             |                                 
            
                1,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/30/2011
             | 
            
                +0.50 / +1.28%
             |             
            
                39.50
             |           
            
                39.50
             |               
            
                39.50
             |                           
            
                39.50
             | 
            
                39.50
             |                     
            
                4.94
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/29/2011
             | 
            
                0.00 / 0.00%
             |             
            
                40.00
             |           
            
                40.00
             |               
            
                39.00
             |                           
            
                39.00
             | 
            
                39.00
             |                     
            
                4.88
             |                                 
            
                7,300
             |            
            
                 
             |                                       
         
    
        
            | 
                3/28/2011
             | 
            
                0.00 / 0.00%
             |             
            
                39.50
             |           
            
                39.50
             |               
            
                39.00
             |                           
            
                39.00
             | 
            
                39.00
             |                     
            
                4.88
             |                                 
            
                1,300
             |  
            
                 
             |                                                              
             
    
         
    
    
 |