| 
                 
                    Closing price on 6/4/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    30.10 | 
                 
                
                    | High | 
                    30.20 | 
                 
                
                    | Low | 
                    29.00 | 
                     
                
                    | Volume | 
                    53,500 | 
                                 
                
                    | Split-adjusted Price | 
                    5.70 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
LAS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/4/2012
             | 
            
                -1.30 / -4.26%
             |             
            
                30.10
             |           
            
                30.20
             |               
            
                29.00
             |                           
            
                29.20
             | 
            
                29.51
             |                     
            
                5.70
             |                                 
            
                53,500
             |            
            
                 
             |                                       
         
    
        
            | 
                6/1/2012
             | 
            
                +0.40 / +1.33%
             |             
            
                30.40
             |           
            
                30.50
             |               
            
                30.10
             |                           
            
                30.50
             | 
            
                30.27
             |                     
            
                5.96
             |                                 
            
                34,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/31/2012
             | 
            
                -0.70 / -2.27%
             |             
            
                30.50
             |           
            
                30.90
             |               
            
                30.00
             |                           
            
                30.10
             | 
            
                30.41
             |                     
            
                5.88
             |                                 
            
                117,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/30/2012
             | 
            
                +0.30 / +0.98%
             |             
            
                30.50
             |           
            
                30.90
             |               
            
                30.30
             |                           
            
                30.80
             | 
            
                30.59
             |                     
            
                6.02
             |                                 
            
                47,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/29/2012
             | 
            
                -0.20 / -0.65%
             |             
            
                30.20
             |           
            
                30.90
             |               
            
                30.10
             |                           
            
                30.50
             | 
            
                30.55
             |                     
            
                5.96
             |                                 
            
                39,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/28/2012
             | 
            
                -0.50 / -1.60%
             |             
            
                32.00
             |           
            
                32.00
             |               
            
                30.70
             |                           
            
                30.70
             | 
            
                31.20
             |                     
            
                6.00
             |                                 
            
                94,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/25/2012
             | 
            
                +2.00 / +6.85%
             |             
            
                30.50
             |           
            
                31.20
             |               
            
                30.50
             |                           
            
                31.20
             | 
            
                31.09
             |                     
            
                6.09
             |                                 
            
                133,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/24/2012
             | 
            
                -0.30 / -1.02%
             |             
            
                30.00
             |           
            
                30.00
             |               
            
                28.80
             |                           
            
                29.20
             | 
            
                29.43
             |                     
            
                5.70
             |                                 
            
                110,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/23/2012
             | 
            
                -2.30 / -7.23%
             |             
            
                30.50
             |           
            
                30.80
             |               
            
                29.50
             |                           
            
                29.50
             | 
            
                30.10
             |                     
            
                5.76
             |                                 
            
                60,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/22/2012
             | 
            
                +0.10 / +0.32%
             |             
            
                31.70
             |           
            
                32.50
             |               
            
                30.90
             |                           
            
                31.80
             | 
            
                31.67
             |                     
            
                6.21
             |                                 
            
                161,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/21/2012
             | 
            
                +1.70 / +5.67%
             |             
            
                29.80
             |           
            
                31.70
             |               
            
                29.80
             |                           
            
                31.70
             | 
            
                31.09
             |                     
            
                6.19
             |                                 
            
                30,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2012
             | 
            
                +0.20 / +0.67%
             |             
            
                29.60
             |           
            
                30.00
             |               
            
                28.50
             |                           
            
                30.00
             | 
            
                29.12
             |                     
            
                5.86
             |                                 
            
                78,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/17/2012
             | 
            
                -0.70 / -2.30%
             |             
            
                30.50
             |           
            
                31.00
             |               
            
                29.70
             |                           
            
                29.80
             | 
            
                30.05
             |                     
            
                5.82
             |                                 
            
                71,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2012
             | 
            
                +1.20 / +4.10%
             |             
            
                29.00
             |           
            
                31.00
             |               
            
                28.50
             |                           
            
                30.50
             | 
            
                29.28
             |                     
            
                5.96
             |                                 
            
                161,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/15/2012
             | 
            
                -2.20 / -6.98%
             |             
            
                31.00
             |           
            
                32.50
             |               
            
                29.30
             |                           
            
                29.30
             | 
            
                29.91
             |                     
            
                5.72
             |                                 
            
                354,150
             |            
            
                 
             |                                       
         
    
        
            | 
                5/14/2012
             | 
            
                -2.10 / -6.25%
             |             
            
                33.80
             |           
            
                34.00
             |               
            
                31.50
             |                           
            
                31.50
             | 
            
                32.03
             |                     
            
                6.15
             |                                 
            
                201,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/11/2012
             | 
            
                -1.50 / -4.27%
             |             
            
                35.30
             |           
            
                35.30
             |               
            
                33.00
             |                           
            
                33.60
             | 
            
                34.17
             |                     
            
                6.56
             |                                 
            
                113,200
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2012
             | 
            
                -1.90 / -5.14%
             |             
            
                37.30
             |           
            
                37.50
             |               
            
                35.00
             |                           
            
                35.10
             | 
            
                35.91
             |                     
            
                6.86
             |                                 
            
                202,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/9/2012
             | 
            
                +0.60 / +1.65%
             |             
            
                38.90
             |           
            
                38.90
             |               
            
                36.40
             |                           
            
                37.00
             | 
            
                37.64
             |                     
            
                7.23
             |                                 
            
                129,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/8/2012
             | 
            
                +2.30 / +6.74%
             |             
            
                36.40
             |           
            
                36.40
             |               
            
                36.40
             |                           
            
                36.40
             | 
            
                36.40
             |                     
            
                7.11
             |                                 
            
                620,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/7/2012
             | 
            
                +2.30 / +7.23%
             |             
            
                33.20
             |           
            
                34.10
             |               
            
                33.20
             |                           
            
                34.10
             | 
            
                34.07
             |                     
            
                6.66
             |                                 
            
                343,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/4/2012
             | 
            
                -0.90 / -2.75%
             |             
            
                32.20
             |           
            
                32.50
             |               
            
                31.80
             |                           
            
                31.80
             | 
            
                32.02
             |                     
            
                6.21
             |                                 
            
                126,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/3/2012
             | 
            
                +0.60 / +1.87%
             |             
            
                33.80
             |           
            
                33.90
             |               
            
                30.60
             |                           
            
                32.70
             | 
            
                32.01
             |                     
            
                6.39
             |                                 
            
                51,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/2/2012
             | 
            
                +2.20 / +7.36%
             |             
            
                31.50
             |           
            
                32.10
             |               
            
                31.00
             |                           
            
                32.10
             | 
            
                32.01
             |                     
            
                6.27
             |                                 
            
                220,982
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/27/2012
             | 
            
                +1.10 / +3.82%
             |             
            
                29.00
             |           
            
                30.20
             |               
            
                28.80
             |                           
            
                29.90
             | 
            
                29.44
             |                     
            
                5.84
             |                                 
            
                151,400
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2012
             | 
            
                -0.10 / -0.35%
             |             
            
                29.30
             |           
            
                29.50
             |               
            
                28.80
             |                           
            
                28.80
             | 
            
                29.02
             |                     
            
                5.63
             |                                 
            
                72,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/25/2012
             | 
            
                +0.60 / +2.12%
             |             
            
                29.20
             |           
            
                29.50
             |               
            
                28.50
             |                           
            
                28.90
             | 
            
                29.12
             |                     
            
                5.65
             |                                 
            
                101,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/24/2012
             | 
            
                +0.20 / +0.71%
             |             
            
                27.70
             |           
            
                28.30
             |               
            
                27.70
             |                           
            
                28.30
             | 
            
                28.10
             |                     
            
                5.53
             |                                 
            
                24,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/23/2012
             | 
            
                +0.10 / +0.36%
             |             
            
                28.00
             |           
            
                28.10
             |               
            
                27.70
             |                           
            
                28.10
             | 
            
                27.99
             |                     
            
                5.49
             |                                 
            
                58,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/20/2012
             | 
            
                +0.30 / +1.08%
             |             
            
                27.30
             |           
            
                28.00
             |               
            
                27.30
             |                           
            
                28.00
             | 
            
                27.65
             |                     
            
                5.47
             |                                 
            
                50,200
             |  
            
                 
             |                                                              
             
    
         
    
    
 |