| 
                 
                    Closing price on 5/10/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    5.50 | 
                 
                
                    | High | 
                    5.70 | 
                 
                
                    | Low | 
                    5.40 | 
                     
                
                    | Volume | 
                    31,600 | 
                                 
                
                    | Split-adjusted Price | 
                    3.99 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
HTP Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/10/2012
             | 
            
                +0.10 / +1.82%
             |             
            
                5.50
             |           
            
                5.70
             |               
            
                5.40
             |                           
            
                5.60
             | 
            
                5.60
             |                     
            
                3.99
             |                                 
            
                31,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/9/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.60
             |           
            
                5.60
             |               
            
                5.50
             |                           
            
                5.50
             | 
            
                5.50
             |                     
            
                3.92
             |                                 
            
                25,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/8/2012
             | 
            
                +0.10 / +1.85%
             |             
            
                5.50
             |           
            
                5.70
             |               
            
                5.40
             |                           
            
                5.50
             | 
            
                5.50
             |                     
            
                3.92
             |                                 
            
                40,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/7/2012
             | 
            
                +0.30 / +5.88%
             |             
            
                5.10
             |           
            
                5.40
             |               
            
                5.00
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                3.85
             |                                 
            
                91,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/4/2012
             | 
            
                +0.20 / +4.08%
             |             
            
                5.00
             |           
            
                5.20
             |               
            
                4.90
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                3.64
             |                                 
            
                23,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/3/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.80
             |           
            
                4.90
             |               
            
                4.60
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                3.49
             |                                 
            
                24,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/2/2012
             | 
            
                +0.20 / +4.26%
             |             
            
                4.80
             |           
            
                4.90
             |               
            
                4.70
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                3.49
             |                                 
            
                8,700
             |            
            
                 
             |                                       
         
    
        
            | 
                4/27/2012
             | 
            
                -0.10 / -2.08%
             |             
            
                4.80
             |           
            
                4.90
             |               
            
                4.60
             |                           
            
                4.70
             | 
            
                4.70
             |                     
            
                3.35
             |                                 
            
                12,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/26/2012
             | 
            
                +0.10 / +2.13%
             |             
            
                4.70
             |           
            
                4.80
             |               
            
                4.60
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                3.42
             |                                 
            
                9,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/25/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.70
             |           
            
                4.80
             |               
            
                4.70
             |                           
            
                4.70
             | 
            
                4.70
             |                     
            
                3.35
             |                                 
            
                5,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/24/2012
             | 
            
                +0.10 / +2.17%
             |             
            
                4.60
             |           
            
                4.70
             |               
            
                4.50
             |                           
            
                4.70
             | 
            
                4.70
             |                     
            
                3.35
             |                                 
            
                10,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/23/2012
             | 
            
                +0.10 / +2.22%
             |             
            
                4.50
             |           
            
                4.70
             |               
            
                4.50
             |                           
            
                4.60
             | 
            
                4.60
             |                     
            
                3.28
             |                                 
            
                3,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/20/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.50
             |           
            
                4.50
             |               
            
                4.40
             |                           
            
                4.50
             | 
            
                4.50
             |                     
            
                3.21
             |                                 
            
                12,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2012
             | 
            
                -0.20 / -4.26%
             |             
            
                4.70
             |           
            
                4.70
             |               
            
                4.50
             |                           
            
                4.50
             | 
            
                4.50
             |                     
            
                3.21
             |                                 
            
                16,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/18/2012
             | 
            
                +0.30 / +6.82%
             |             
            
                4.40
             |           
            
                4.70
             |               
            
                4.40
             |                           
            
                4.70
             | 
            
                4.70
             |                     
            
                3.35
             |                                 
            
                50,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/17/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.40
             |           
            
                4.50
             |               
            
                4.40
             |                           
            
                4.40
             | 
            
                4.40
             |                     
            
                3.14
             |                                 
            
                9,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/16/2012
             | 
            
                +0.10 / +2.33%
             |             
            
                4.40
             |           
            
                4.40
             |               
            
                4.30
             |                           
            
                4.40
             | 
            
                4.40
             |                     
            
                3.14
             |                                 
            
                6,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/13/2012
             | 
            
                -0.10 / -2.27%
             |             
            
                4.30
             |           
            
                4.30
             |               
            
                4.20
             |                           
            
                4.30
             | 
            
                4.30
             |                     
            
                3.07
             |                                 
            
                5,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/12/2012
             | 
            
                +0.20 / +4.76%
             |             
            
                4.30
             |           
            
                4.40
             |               
            
                4.30
             |                           
            
                4.40
             | 
            
                4.40
             |                     
            
                3.14
             |                                 
            
                31,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/11/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.10
             |           
            
                4.20
             |               
            
                4.10
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                2.99
             |                                 
            
                9,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/10/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.20
             |           
            
                4.30
             |               
            
                4.20
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                2.99
             |                                 
            
                4,600
             |            
            
                 
             |                                       
         
    
        
            | 
                4/9/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.20
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                2.99
             |                                 
            
                4,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/6/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.10
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                2.99
             |                                 
            
                6,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/5/2012
             | 
            
                -0.10 / -2.33%
             |             
            
                4.10
             |           
            
                4.20
             |               
            
                4.00
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                2.99
             |                                 
            
                33,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/4/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.20
             |           
            
                4.30
             |               
            
                4.20
             |                           
            
                4.30
             | 
            
                4.30
             |                     
            
                3.07
             |                                 
            
                2,200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/3/2012
             | 
            
                +0.10 / +2.38%
             |             
            
                4.10
             |           
            
                4.30
             |               
            
                4.10
             |                           
            
                4.30
             | 
            
                4.30
             |                     
            
                3.07
             |                                 
            
                3,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/30/2012
             | 
            
                -0.10 / -2.33%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.10
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                2.99
             |                                 
            
                21,100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/29/2012
             | 
            
                -0.10 / -2.27%
             |             
            
                4.20
             |           
            
                4.30
             |               
            
                4.20
             |                           
            
                4.30
             | 
            
                4.30
             |                     
            
                3.07
             |                                 
            
                5,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/28/2012
             | 
            
                +0.20 / +4.76%
             |             
            
                4.20
             |           
            
                4.40
             |               
            
                4.20
             |                           
            
                4.40
             | 
            
                4.40
             |                     
            
                3.14
             |                                 
            
                21,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/27/2012
             | 
            
                -0.20 / -4.55%
             |             
            
                4.30
             |           
            
                4.30
             |               
            
                4.20
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                2.99
             |                                 
            
                21,600
             |  
            
                 
             |                                                              
             
    
         
    
    
 |