| 
                 
                    Closing price on 2/14/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    13.70 | 
                 
                
                    | High | 
                    13.70 | 
                 
                
                    | Low | 
                    12.80 | 
                     
                
                    | Volume | 
                    4,400 | 
                                 
                
                    | Split-adjusted Price | 
                    6.75 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NGC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                2/14/2011
             | 
            
                -0.90 / -6.57%
             |             
            
                13.70
             |           
            
                13.70
             |               
            
                12.80
             |                           
            
                12.80
             | 
            
                13.03
             |                     
            
                6.75
             |                                 
            
                4,400
             |            
            
                 
             |                                       
         
    
        
            | 
                2/11/2011
             | 
            
                -1.00 / -6.80%
             |             
            
                13.70
             |           
            
                13.70
             |               
            
                13.70
             |                           
            
                13.70
             | 
            
                13.70
             |                     
            
                7.23
             |                                 
            
                1,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/10/2011
             | 
            
                0.00 / 0.00%
             |             
            
                14.70
             |           
            
                14.70
             |               
            
                14.70
             |                           
            
                14.70
             | 
            
                14.70
             |                     
            
                7.75
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                2/9/2011
             | 
            
                -1.00 / -6.37%
             |             
            
                14.70
             |           
            
                14.70
             |               
            
                14.70
             |                           
            
                14.70
             | 
            
                14.70
             |                     
            
                7.75
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/8/2011
             | 
            
                -1.10 / -6.55%
             |             
            
                15.70
             |           
            
                15.70
             |               
            
                15.70
             |                           
            
                15.70
             | 
            
                15.70
             |                     
            
                8.28
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/28/2011
             | 
            
                0.00 / 0.00%
             |             
            
                16.80
             |           
            
                16.80
             |               
            
                16.80
             |                           
            
                16.80
             | 
            
                16.80
             |                     
            
                8.86
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/27/2011
             | 
            
                0.00 / 0.00%
             |             
            
                16.80
             |           
            
                16.80
             |               
            
                16.80
             |                           
            
                16.80
             | 
            
                16.80
             |                     
            
                8.86
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                1/26/2011
             | 
            
                0.00 / 0.00%
             |             
            
                16.80
             |           
            
                16.80
             |               
            
                16.80
             |                           
            
                16.80
             | 
            
                16.80
             |                     
            
                8.86
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/25/2011
             | 
            
                0.00 / 0.00%
             |             
            
                16.80
             |           
            
                16.80
             |               
            
                16.80
             |                           
            
                16.80
             | 
            
                16.80
             |                     
            
                8.86
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                1/24/2011
             | 
            
                0.00 / 0.00%
             |             
            
                16.80
             |           
            
                16.80
             |               
            
                16.80
             |                           
            
                16.80
             | 
            
                16.80
             |                     
            
                8.86
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/21/2011
             | 
            
                0.00 / 0.00%
             |             
            
                16.80
             |           
            
                16.80
             |               
            
                16.80
             |                           
            
                16.80
             | 
            
                16.80
             |                     
            
                8.86
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                1/20/2011
             | 
            
                0.00 / 0.00%
             |             
            
                16.80
             |           
            
                16.80
             |               
            
                16.80
             |                           
            
                16.80
             | 
            
                16.80
             |                     
            
                8.86
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/19/2011
             | 
            
                0.00 / 0.00%
             |             
            
                16.80
             |           
            
                16.80
             |               
            
                16.80
             |                           
            
                16.80
             | 
            
                16.80
             |                     
            
                8.86
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                1/18/2011
             | 
            
                0.00 / 0.00%
             |             
            
                16.80
             |           
            
                16.80
             |               
            
                16.80
             |                           
            
                16.80
             | 
            
                16.80
             |                     
            
                8.86
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/17/2011
             | 
            
                0.00 / 0.00%
             |             
            
                16.80
             |           
            
                16.80
             |               
            
                16.80
             |                           
            
                16.80
             | 
            
                16.80
             |                     
            
                8.86
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                1/14/2011
             | 
            
                0.00 / 0.00%
             |             
            
                16.80
             |           
            
                16.80
             |               
            
                16.80
             |                           
            
                16.80
             | 
            
                16.80
             |                     
            
                8.86
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/13/2011
             | 
            
                0.00 / 0.00%
             |             
            
                16.80
             |           
            
                16.80
             |               
            
                16.80
             |                           
            
                16.80
             | 
            
                16.80
             |                     
            
                8.86
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                1/12/2011
             | 
            
                +1.00 / +6.33%
             |             
            
                16.80
             |           
            
                16.80
             |               
            
                16.80
             |                           
            
                16.80
             | 
            
                16.80
             |                     
            
                8.86
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/11/2011
             | 
            
                -0.30 / -1.86%
             |             
            
                16.00
             |           
            
                16.00
             |               
            
                15.80
             |                           
            
                15.80
             | 
            
                15.82
             |                     
            
                8.34
             |                                 
            
                1,100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/10/2011
             | 
            
                +0.90 / +5.92%
             |             
            
                16.10
             |           
            
                16.10
             |               
            
                16.10
             |                           
            
                16.10
             | 
            
                16.10
             |                     
            
                8.07
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/7/2011
             | 
            
                -0.50 / -3.18%
             |             
            
                15.20
             |           
            
                15.20
             |               
            
                15.20
             |                           
            
                15.20
             | 
            
                15.20
             |                     
            
                7.62
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/6/2011
             | 
            
                +1.00 / +6.80%
             |             
            
                15.20
             |           
            
                15.70
             |               
            
                14.70
             |                           
            
                15.70
             | 
            
                15.21
             |                     
            
                7.87
             |                                 
            
                2,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/5/2011
             | 
            
                +0.90 / +6.52%
             |             
            
                14.70
             |           
            
                14.70
             |               
            
                14.70
             |                           
            
                14.70
             | 
            
                14.70
             |                     
            
                7.37
             |                                 
            
                800
             |            
            
                 
             |                                       
         
    
        
            | 
                1/4/2011
             | 
            
                +0.90 / +6.98%
             |             
            
                13.80
             |           
            
                13.80
             |               
            
                13.80
             |                           
            
                13.80
             | 
            
                13.80
             |                     
            
                6.92
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/31/2010
             | 
            
                -0.90 / -6.52%
             |             
            
                12.90
             |           
            
                12.90
             |               
            
                12.90
             |                           
            
                12.90
             | 
            
                12.90
             |                     
            
                6.47
             |                                 
            
                1,000
             |            
            
                 
             |                                       
         
    
        
            | 
                12/30/2010
             | 
            
                -0.70 / -4.83%
             |             
            
                13.80
             |           
            
                13.80
             |               
            
                13.80
             |                           
            
                13.80
             | 
            
                13.80
             |                     
            
                6.92
             |                                 
            
                1,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/29/2010
             | 
            
                +0.90 / +6.62%
             |             
            
                12.70
             |           
            
                14.50
             |               
            
                12.70
             |                           
            
                14.50
             | 
            
                12.86
             |                     
            
                7.27
             |                                 
            
                1,600
             |            
            
                 
             |                                       
         
    
        
            | 
                12/28/2010
             | 
            
                +0.80 / +6.25%
             |             
            
                13.60
             |           
            
                13.60
             |               
            
                13.60
             |                           
            
                13.60
             | 
            
                13.60
             |                     
            
                6.82
             |                                 
            
                2,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/27/2010
             | 
            
                +0.80 / +6.67%
             |             
            
                12.80
             |           
            
                12.80
             |               
            
                12.80
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                6.42
             |                                 
            
                8,200
             |            
            
                 
             |                                       
         
    
        
            | 
                12/24/2010
             | 
            
                +0.70 / +6.19%
             |             
            
                12.00
             |           
            
                12.00
             |               
            
                12.00
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                6.02
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
         
    
    
 |