| 
                 
                    Closing price on 2/17/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    15.00 | 
                 
                
                    | High | 
                    15.00 | 
                 
                
                    | Low | 
                    14.70 | 
                     
                
                    | Volume | 
                    32,770 | 
                                 
                
                    | Split-adjusted Price | 
                    11.31 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
TTF Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                2/17/2011
             | 
            
                -0.50 / -3.29%
             |             
            
                15.00
             |           
            
                15.00
             |               
            
                14.70
             |                           
            
                14.70
             | 
            
                14.70
             |                     
            
                11.31
             |                                 
            
                32,770
             |            
            
                 
             |                                       
         
    
        
            | 
                2/16/2011
             | 
            
                0.00 / 0.00%
             |             
            
                15.20
             |           
            
                15.20
             |               
            
                15.20
             |                           
            
                15.20
             | 
            
                15.20
             |                     
            
                11.69
             |                                 
            
                210
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/15/2011
             | 
            
                +0.10 / +0.66%
             |             
            
                15.20
             |           
            
                15.20
             |               
            
                14.90
             |                           
            
                15.20
             | 
            
                15.20
             |                     
            
                11.69
             |                                 
            
                24,300
             |            
            
                 
             |                                       
         
    
        
            | 
                2/14/2011
             | 
            
                -0.20 / -1.31%
             |             
            
                15.50
             |           
            
                15.50
             |               
            
                15.00
             |                           
            
                15.10
             | 
            
                15.10
             |                     
            
                11.61
             |                                 
            
                47,370
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/11/2011
             | 
            
                -0.20 / -1.29%
             |             
            
                15.40
             |           
            
                15.40
             |               
            
                15.30
             |                           
            
                15.30
             | 
            
                15.30
             |                     
            
                11.77
             |                                 
            
                7,290
             |            
            
                 
             |                                       
         
    
        
            | 
                2/10/2011
             | 
            
                +0.30 / +1.97%
             |             
            
                15.50
             |           
            
                15.60
             |               
            
                15.50
             |                           
            
                15.50
             | 
            
                15.50
             |                     
            
                11.92
             |                                 
            
                9,150
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/9/2011
             | 
            
                +0.10 / +0.66%
             |             
            
                15.30
             |           
            
                15.60
             |               
            
                15.10
             |                           
            
                15.20
             | 
            
                15.20
             |                     
            
                11.69
             |                                 
            
                42,460
             |            
            
                 
             |                                       
         
    
        
            | 
                2/8/2011
             | 
            
                -0.20 / -1.31%
             |             
            
                15.30
             |           
            
                15.40
             |               
            
                15.10
             |                           
            
                15.10
             | 
            
                15.10
             |                     
            
                11.61
             |                                 
            
                16,240
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/28/2011
             | 
            
                +0.20 / +1.32%
             |             
            
                15.70
             |           
            
                15.70
             |               
            
                15.20
             |                           
            
                15.30
             | 
            
                15.30
             |                     
            
                11.77
             |                                 
            
                1,930
             |            
            
                 
             |                                       
         
    
        
            | 
                1/27/2011
             | 
            
                -0.20 / -1.31%
             |             
            
                15.40
             |           
            
                15.70
             |               
            
                15.10
             |                           
            
                15.10
             | 
            
                15.10
             |                     
            
                11.61
             |                                 
            
                10,050
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/26/2011
             | 
            
                +0.50 / +3.38%
             |             
            
                14.80
             |           
            
                15.40
             |               
            
                14.60
             |                           
            
                15.30
             | 
            
                15.30
             |                     
            
                11.77
             |                                 
            
                44,680
             |            
            
                 
             |                                       
         
    
        
            | 
                1/25/2011
             | 
            
                -0.70 / -4.52%
             |             
            
                15.80
             |           
            
                15.80
             |               
            
                14.80
             |                           
            
                14.80
             | 
            
                14.80
             |                     
            
                11.38
             |                                 
            
                83,480
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/24/2011
             | 
            
                0.00 / 0.00%
             |             
            
                15.90
             |           
            
                15.90
             |               
            
                15.50
             |                           
            
                15.50
             | 
            
                15.50
             |                     
            
                11.92
             |                                 
            
                7,840
             |            
            
                 
             |                                       
         
    
        
            | 
                1/21/2011
             | 
            
                -0.40 / -2.52%
             |             
            
                15.90
             |           
            
                15.90
             |               
            
                15.50
             |                           
            
                15.50
             | 
            
                15.50
             |                     
            
                11.92
             |                                 
            
                9,070
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/20/2011
             | 
            
                0.00 / 0.00%
             |             
            
                15.90
             |           
            
                16.10
             |               
            
                15.90
             |                           
            
                15.90
             | 
            
                15.90
             |                     
            
                12.23
             |                                 
            
                161,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/19/2011
             | 
            
                +0.10 / +0.63%
             |             
            
                15.30
             |           
            
                16.00
             |               
            
                15.30
             |                           
            
                15.90
             | 
            
                15.90
             |                     
            
                12.23
             |                                 
            
                15,170
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/18/2011
             | 
            
                -0.20 / -1.25%
             |             
            
                16.00
             |           
            
                16.00
             |               
            
                15.80
             |                           
            
                15.80
             | 
            
                15.80
             |                     
            
                12.15
             |                                 
            
                21,790
             |            
            
                 
             |                                       
         
    
        
            | 
                1/17/2011
             | 
            
                +0.50 / +3.23%
             |             
            
                15.20
             |           
            
                16.00
             |               
            
                15.20
             |                           
            
                16.00
             | 
            
                16.00
             |                     
            
                12.31
             |                                 
            
                52,820
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/14/2011
             | 
            
                0.00 / 0.00%
             |             
            
                16.00
             |           
            
                16.00
             |               
            
                15.50
             |                           
            
                15.50
             | 
            
                15.50
             |                     
            
                11.92
             |                                 
            
                3,770
             |            
            
                 
             |                                       
         
    
        
            | 
                1/13/2011
             | 
            
                -0.10 / -0.64%
             |             
            
                16.00
             |           
            
                16.00
             |               
            
                15.50
             |                           
            
                15.50
             | 
            
                15.50
             |                     
            
                11.92
             |                                 
            
                40,060
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/12/2011
             | 
            
                +0.50 / +3.31%
             |             
            
                15.60
             |           
            
                15.70
             |               
            
                15.20
             |                           
            
                15.60
             | 
            
                15.60
             |                     
            
                12.00
             |                                 
            
                15,010
             |            
            
                 
             |                                       
         
    
        
            | 
                1/11/2011
             | 
            
                -0.40 / -2.58%
             |             
            
                15.30
             |           
            
                15.50
             |               
            
                15.10
             |                           
            
                15.10
             | 
            
                15.10
             |                     
            
                11.61
             |                                 
            
                11,180
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/10/2011
             | 
            
                -0.40 / -2.52%
             |             
            
                15.80
             |           
            
                15.90
             |               
            
                15.50
             |                           
            
                15.50
             | 
            
                15.50
             |                     
            
                11.92
             |                                 
            
                5,150
             |            
            
                 
             |                                       
         
    
        
            | 
                1/7/2011
             | 
            
                -0.10 / -0.63%
             |             
            
                16.00
             |           
            
                16.10
             |               
            
                15.90
             |                           
            
                15.90
             | 
            
                15.90
             |                     
            
                12.23
             |                                 
            
                40,060
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/6/2011
             | 
            
                -0.50 / -3.03%
             |             
            
                16.30
             |           
            
                16.50
             |               
            
                16.00
             |                           
            
                16.00
             | 
            
                16.00
             |                     
            
                12.31
             |                                 
            
                45,420
             |            
            
                 
             |                                       
         
    
        
            | 
                1/5/2011
             | 
            
                -0.30 / -1.79%
             |             
            
                16.60
             |           
            
                16.60
             |               
            
                16.40
             |                           
            
                16.50
             | 
            
                16.50
             |                     
            
                12.69
             |                                 
            
                16,710
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/4/2011
             | 
            
                -0.70 / -4.00%
             |             
            
                17.00
             |           
            
                17.00
             |               
            
                16.80
             |                           
            
                16.80
             | 
            
                16.80
             |                     
            
                12.92
             |                                 
            
                22,870
             |            
            
                 
             |                                       
         
    
        
            | 
                12/31/2010
             | 
            
                0.00 / 0.00%
             |             
            
                17.00
             |           
            
                17.50
             |               
            
                16.80
             |                           
            
                17.50
             | 
            
                17.50
             |                     
            
                13.46
             |                                 
            
                295,540
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/30/2010
             | 
            
                +0.10 / +0.57%
             |             
            
                17.60
             |           
            
                17.60
             |               
            
                16.90
             |                           
            
                17.50
             | 
            
                17.50
             |                     
            
                13.46
             |                                 
            
                323,330
             |            
            
                 
             |                                       
         
    
        
            | 
                12/29/2010
             | 
            
                +0.60 / +3.57%
             |             
            
                16.80
             |           
            
                17.40
             |               
            
                16.60
             |                           
            
                17.40
             | 
            
                17.40
             |                     
            
                13.38
             |                                 
            
                121,200
             |  
            
                 
             |                                                              
             
    
         
    
    
 |