| 
                 
                    Closing price on 3/17/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    13.00 | 
                 
                
                    | High | 
                    13.30 | 
                 
                
                    | Low | 
                    13.00 | 
                     
                
                    | Volume | 
                    34,810 | 
                                 
                
                    | Split-adjusted Price | 
                    10.15 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
TTF Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/17/2011
             | 
            
                +0.10 / +0.76%
             |             
            
                13.00
             |           
            
                13.30
             |               
            
                13.00
             |                           
            
                13.20
             | 
            
                13.20
             |                     
            
                10.15
             |                                 
            
                34,810
             |            
            
                 
             |                                       
         
    
        
            | 
                3/16/2011
             | 
            
                0.00 / 0.00%
             |             
            
                13.30
             |           
            
                13.30
             |               
            
                12.90
             |                           
            
                13.10
             | 
            
                13.10
             |                     
            
                10.08
             |                                 
            
                38,970
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/15/2011
             | 
            
                +0.30 / +2.34%
             |             
            
                12.90
             |           
            
                13.10
             |               
            
                12.80
             |                           
            
                13.10
             | 
            
                13.10
             |                     
            
                10.08
             |                                 
            
                55,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/14/2011
             | 
            
                -0.50 / -3.76%
             |             
            
                12.90
             |           
            
                13.30
             |               
            
                12.80
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                9.85
             |                                 
            
                93,680
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/11/2011
             | 
            
                +0.10 / +0.76%
             |             
            
                13.40
             |           
            
                13.40
             |               
            
                13.20
             |                           
            
                13.30
             | 
            
                13.30
             |                     
            
                10.23
             |                                 
            
                84,350
             |            
            
                 
             |                                       
         
    
        
            | 
                3/10/2011
             | 
            
                +0.40 / +3.13%
             |             
            
                12.60
             |           
            
                13.20
             |               
            
                12.60
             |                           
            
                13.20
             | 
            
                13.20
             |                     
            
                10.15
             |                                 
            
                78,590
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/9/2011
             | 
            
                +0.10 / +0.79%
             |             
            
                12.50
             |           
            
                12.80
             |               
            
                12.30
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                9.85
             |                                 
            
                13,710
             |            
            
                 
             |                                       
         
    
        
            | 
                3/8/2011
             | 
            
                0.00 / 0.00%
             |             
            
                12.70
             |           
            
                12.90
             |               
            
                12.70
             |                           
            
                12.70
             | 
            
                12.70
             |                     
            
                9.77
             |                                 
            
                65,280
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/7/2011
             | 
            
                -0.30 / -2.31%
             |             
            
                13.10
             |           
            
                13.10
             |               
            
                12.70
             |                           
            
                12.70
             | 
            
                12.70
             |                     
            
                9.77
             |                                 
            
                35,580
             |            
            
                 
             |                                       
         
    
        
            | 
                3/4/2011
             | 
            
                +0.20 / +1.56%
             |             
            
                12.60
             |           
            
                13.00
             |               
            
                12.60
             |                           
            
                13.00
             | 
            
                13.00
             |                     
            
                10.00
             |                                 
            
                35,960
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/3/2011
             | 
            
                -0.10 / -0.78%
             |             
            
                12.80
             |           
            
                13.10
             |               
            
                12.70
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                9.85
             |                                 
            
                61,900
             |            
            
                 
             |                                       
         
    
        
            | 
                3/2/2011
             | 
            
                -0.20 / -1.53%
             |             
            
                13.10
             |           
            
                13.20
             |               
            
                12.60
             |                           
            
                12.90
             | 
            
                12.90
             |                     
            
                9.92
             |                                 
            
                48,910
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/1/2011
             | 
            
                +0.60 / +4.80%
             |             
            
                12.70
             |           
            
                13.10
             |               
            
                12.60
             |                           
            
                13.10
             | 
            
                13.10
             |                     
            
                10.08
             |                                 
            
                96,490
             |            
            
                 
             |                                       
         
    
        
            | 
                2/28/2011
             | 
            
                0.00 / 0.00%
             |             
            
                12.50
             |           
            
                12.60
             |               
            
                12.40
             |                           
            
                12.50
             | 
            
                12.50
             |                     
            
                9.61
             |                                 
            
                99,290
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/25/2011
             | 
            
                +0.30 / +2.46%
             |             
            
                12.30
             |           
            
                12.60
             |               
            
                12.10
             |                           
            
                12.50
             | 
            
                12.50
             |                     
            
                9.61
             |                                 
            
                148,580
             |            
            
                 
             |                                       
         
    
        
            | 
                2/24/2011
             | 
            
                -0.30 / -2.40%
             |             
            
                12.50
             |           
            
                12.60
             |               
            
                11.90
             |                           
            
                12.20
             | 
            
                12.20
             |                     
            
                9.38
             |                                 
            
                103,990
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/23/2011
             | 
            
                -0.30 / -2.34%
             |             
            
                12.60
             |           
            
                13.10
             |               
            
                12.30
             |                           
            
                12.50
             | 
            
                12.50
             |                     
            
                9.61
             |                                 
            
                109,100
             |            
            
                 
             |                                       
         
    
        
            | 
                2/22/2011
             | 
            
                -0.50 / -3.76%
             |             
            
                13.00
             |           
            
                13.10
             |               
            
                12.80
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                9.85
             |                                 
            
                26,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/21/2011
             | 
            
                -0.70 / -5.00%
             |             
            
                13.50
             |           
            
                13.50
             |               
            
                13.30
             |                           
            
                13.30
             | 
            
                13.30
             |                     
            
                10.23
             |                                 
            
                147,690
             |            
            
                 
             |                                       
         
    
        
            | 
                2/18/2011
             | 
            
                -0.70 / -4.76%
             |             
            
                14.30
             |           
            
                14.70
             |               
            
                14.00
             |                           
            
                14.00
             | 
            
                14.00
             |                     
            
                10.77
             |                                 
            
                35,760
             |  
            
                 
             |                                                              
             
    
        			
            | 
                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
             |  
            
                 
             |                                                              
             
    
         
    
    
 |