| 
                 
                    Closing price on 7/22/2008
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    16.80 | 
                 
                
                    | High | 
                    16.80 | 
                 
                
                    | Low | 
                    16.80 | 
                     
                
                    | Volume | 
                    100 | 
                                 
                
                    | Split-adjusted Price | 
                    5.88 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NGC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                7/22/2008
             | 
            
                -0.60 / -3.45%
             |             
            
                16.80
             |           
            
                16.80
             |               
            
                16.80
             |                           
            
                16.80
             | 
            
                16.80
             |                     
            
                5.88
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                7/21/2008
             | 
            
                -0.80 / -4.40%
             |             
            
                17.40
             |           
            
                17.40
             |               
            
                17.40
             |                           
            
                17.40
             | 
            
                17.40
             |                     
            
                6.09
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/18/2008
             | 
            
                +0.70 / +4.00%
             |             
            
                18.20
             |           
            
                18.20
             |               
            
                16.80
             |                           
            
                18.20
             | 
            
                18.14
             |                     
            
                6.37
             |                                 
            
                2,900
             |            
            
                 
             |                                       
         
    
        
            | 
                7/17/2008
             | 
            
                +0.60 / +3.55%
             |             
            
                17.50
             |           
            
                17.50
             |               
            
                17.50
             |                           
            
                17.50
             | 
            
                17.50
             |                     
            
                6.12
             |                                 
            
                2,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/16/2008
             | 
            
                -0.90 / -5.06%
             |             
            
                16.90
             |           
            
                16.90
             |               
            
                16.90
             |                           
            
                16.90
             | 
            
                16.90
             |                     
            
                5.91
             |                                 
            
                1,200
             |            
            
                 
             |                                       
         
    
        
            | 
                7/15/2008
             | 
            
                -0.10 / -0.56%
             |             
            
                16.60
             |           
            
                17.80
             |               
            
                16.60
             |                           
            
                17.80
             | 
            
                17.59
             |                     
            
                6.23
             |                                 
            
                2,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/14/2008
             | 
            
                +0.60 / +3.47%
             |             
            
                17.90
             |           
            
                17.90
             |               
            
                17.10
             |                           
            
                17.90
             | 
            
                17.25
             |                     
            
                6.26
             |                                 
            
                9,500
             |            
            
                 
             |                                       
         
    
        
            | 
                7/11/2008
             | 
            
                -0.70 / -3.89%
             |             
            
                17.30
             |           
            
                17.30
             |               
            
                17.30
             |                           
            
                17.30
             | 
            
                17.30
             |                     
            
                6.05
             |                                 
            
                2,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/10/2008
             | 
            
                -0.50 / -2.70%
             |             
            
                18.00
             |           
            
                18.00
             |               
            
                18.00
             |                           
            
                18.00
             | 
            
                18.00
             |                     
            
                6.30
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                7/9/2008
             | 
            
                -0.60 / -3.14%
             |             
            
                18.50
             |           
            
                18.50
             |               
            
                18.50
             |                           
            
                18.50
             | 
            
                18.50
             |                     
            
                6.47
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/8/2008
             | 
            
                0.00 / 0.00%
             |             
            
                19.10
             |           
            
                19.10
             |               
            
                19.10
             |                           
            
                19.10
             | 
            
                19.10
             |                     
            
                6.68
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                7/7/2008
             | 
            
                -0.40 / -2.05%
             |             
            
                19.10
             |           
            
                19.10
             |               
            
                19.10
             |                           
            
                19.10
             | 
            
                19.10
             |                     
            
                6.68
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/4/2008
             | 
            
                +0.40 / +2.09%
             |             
            
                19.10
             |           
            
                19.50
             |               
            
                18.40
             |                           
            
                19.50
             | 
            
                19.07
             |                     
            
                6.82
             |                                 
            
                2,900
             |            
            
                 
             |                                       
         
    
        
            | 
                7/3/2008
             | 
            
                +0.70 / +3.80%
             |             
            
                19.00
             |           
            
                19.10
             |               
            
                19.00
             |                           
            
                19.10
             | 
            
                19.06
             |                     
            
                6.68
             |                                 
            
                800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/2/2008
             | 
            
                +0.80 / +4.55%
             |             
            
                18.40
             |           
            
                18.40
             |               
            
                18.40
             |                           
            
                18.40
             | 
            
                18.40
             |                     
            
                6.44
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                7/1/2008
             | 
            
                -0.70 / -3.83%
             |             
            
                18.30
             |           
            
                18.30
             |               
            
                17.60
             |                           
            
                17.60
             | 
            
                17.84
             |                     
            
                6.16
             |                                 
            
                1,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/30/2008
             | 
            
                +0.70 / +3.98%
             |             
            
                18.30
             |           
            
                18.30
             |               
            
                18.30
             |                           
            
                18.30
             | 
            
                18.30
             |                     
            
                6.40
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                6/27/2008
             | 
            
                0.00 / 0.00%
             |             
            
                17.60
             |           
            
                17.60
             |               
            
                17.60
             |                           
            
                17.60
             | 
            
                17.60
             |                     
            
                6.16
             |                                 
            
                700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/26/2008
             | 
            
                -0.60 / -3.30%
             |             
            
                18.90
             |           
            
                18.90
             |               
            
                17.60
             |                           
            
                17.60
             | 
            
                18.25
             |                     
            
                6.16
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                6/25/2008
             | 
            
                +0.70 / +4.00%
             |             
            
                18.20
             |           
            
                18.20
             |               
            
                18.20
             |                           
            
                18.20
             | 
            
                18.20
             |                     
            
                6.37
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/24/2008
             | 
            
                +0.60 / +3.55%
             |             
            
                17.50
             |           
            
                17.50
             |               
            
                17.50
             |                           
            
                17.50
             | 
            
                17.50
             |                     
            
                6.12
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                6/23/2008
             | 
            
                0.00 / 0.00%
             |             
            
                16.90
             |           
            
                16.90
             |               
            
                16.90
             |                           
            
                16.90
             | 
            
                16.90
             |                     
            
                5.91
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/20/2008
             | 
            
                +0.60 / +3.68%
             |             
            
                16.90
             |           
            
                16.90
             |               
            
                16.90
             |                           
            
                16.90
             | 
            
                16.90
             |                     
            
                5.91
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                6/19/2008
             | 
            
                0.00 / 0.00%
             |             
            
                16.30
             |           
            
                16.30
             |               
            
                16.30
             |                           
            
                16.30
             | 
            
                16.30
             |                     
            
                5.70
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/18/2008
             | 
            
                -0.40 / -2.40%
             |             
            
                16.30
             |           
            
                16.30
             |               
            
                16.30
             |                           
            
                16.30
             | 
            
                16.30
             |                     
            
                5.70
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                6/17/2008
             | 
            
                +0.30 / +1.83%
             |             
            
                16.30
             |           
            
                16.70
             |               
            
                16.30
             |                           
            
                16.70
             | 
            
                16.33
             |                     
            
                5.84
             |                                 
            
                2,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/16/2008
             | 
            
                +0.40 / +2.50%
             |             
            
                16.40
             |           
            
                16.40
             |               
            
                16.00
             |                           
            
                16.40
             | 
            
                16.25
             |                     
            
                5.74
             |                                 
            
                800
             |            
            
                 
             |                                       
         
    
        
            | 
                6/13/2008
             | 
            
                -0.40 / -2.44%
             |             
            
                16.00
             |           
            
                16.00
             |               
            
                16.00
             |                           
            
                16.00
             | 
            
                16.00
             |                     
            
                5.60
             |                                 
            
                8,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/12/2008
             | 
            
                -0.50 / -2.96%
             |             
            
                16.40
             |           
            
                16.40
             |               
            
                16.40
             |                           
            
                16.40
             | 
            
                16.40
             |                     
            
                5.74
             |                                 
            
                800
             |            
            
                 
             |                                       
         
    
        
            | 
                6/11/2008
             | 
            
                +0.40 / +2.42%
             |             
            
                16.10
             |           
            
                16.90
             |               
            
                16.10
             |                           
            
                16.90
             | 
            
                16.37
             |                     
            
                5.91
             |                                 
            
                300
             |  
            
                 
             |                                                              
             
    
         
    
    
 |