| 
                 
                    Closing price on 5/23/2017
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    178.00 | 
                 
                
                    | High | 
                    187.00 | 
                 
                
                    | Low | 
                    178.00 | 
                     
                
                    | Volume | 
                    53,810 | 
                                 
                
                    | Split-adjusted Price | 
                    78.40 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SLS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/23/2017
             | 
            
                +8.40 / +4.73%
             |             
            
                178.00
             |           
            
                187.00
             |               
            
                178.00
             |                           
            
                186.00
             | 
            
                183.68
             |                     
            
                78.40
             |                                 
            
                53,810
             |            
            
                 
             |                                       
         
    
        
            | 
                5/22/2017
             | 
            
                +1.00 / +0.57%
             |             
            
                175.00
             |           
            
                178.50
             |               
            
                175.00
             |                           
            
                177.60
             | 
            
                177.36
             |                     
            
                74.86
             |                                 
            
                14,486
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/19/2017
             | 
            
                +0.30 / +0.17%
             |             
            
                158.70
             |           
            
                178.40
             |               
            
                158.70
             |                           
            
                176.60
             | 
            
                176.01
             |                     
            
                74.43
             |                                 
            
                23,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2017
             | 
            
                +0.80 / +0.46%
             |             
            
                175.50
             |           
            
                179.00
             |               
            
                175.50
             |                           
            
                176.30
             | 
            
                176.73
             |                     
            
                74.31
             |                                 
            
                36,392
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/17/2017
             | 
            
                +0.50 / +0.29%
             |             
            
                173.00
             |           
            
                181.00
             |               
            
                172.60
             |                           
            
                175.50
             | 
            
                174.52
             |                     
            
                73.97
             |                                 
            
                28,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2017
             | 
            
                -0.50 / -0.28%
             |             
            
                175.00
             |           
            
                176.00
             |               
            
                173.90
             |                           
            
                175.00
             | 
            
                174.74
             |                     
            
                73.76
             |                                 
            
                18,250
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/15/2017
             | 
            
                -1.50 / -0.85%
             |             
            
                177.00
             |           
            
                178.00
             |               
            
                174.00
             |                           
            
                175.50
             | 
            
                174.95
             |                     
            
                73.97
             |                                 
            
                22,510
             |            
            
                 
             |                                       
         
    
        
            | 
                5/12/2017
             | 
            
                +1.50 / +0.85%
             |             
            
                175.50
             |           
            
                177.00
             |               
            
                174.00
             |                           
            
                177.00
             | 
            
                175.59
             |                     
            
                74.60
             |                                 
            
                13,031
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/11/2017
             | 
            
                +2.00 / +1.15%
             |             
            
                172.50
             |           
            
                175.50
             |               
            
                172.50
             |                           
            
                175.50
             | 
            
                173.96
             |                     
            
                73.97
             |                                 
            
                15,220
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2017
             | 
            
                -8.60 / -4.72%
             |             
            
                180.00
             |           
            
                180.00
             |               
            
                173.50
             |                           
            
                173.50
             | 
            
                176.53
             |                     
            
                73.13
             |                                 
            
                52,420
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/9/2017
             | 
            
                -1.50 / -0.82%
             |             
            
                180.00
             |           
            
                187.00
             |               
            
                180.00
             |                           
            
                182.10
             | 
            
                184.13
             |                     
            
                76.75
             |                                 
            
                17,623
             |            
            
                 
             |                                       
         
    
        
            | 
                5/8/2017
             | 
            
                -0.40 / -0.22%
             |             
            
                188.80
             |           
            
                188.80
             |               
            
                180.00
             |                           
            
                183.60
             | 
            
                184.00
             |                     
            
                77.38
             |                                 
            
                14,650
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/5/2017
             | 
            
                +1.50 / +0.82%
             |             
            
                181.00
             |           
            
                188.50
             |               
            
                181.00
             |                           
            
                184.00
             | 
            
                185.42
             |                     
            
                77.55
             |                                 
            
                16,620
             |            
            
                 
             |                                       
         
    
        
            | 
                5/4/2017
             | 
            
                +1.50 / +0.83%
             |             
            
                181.50
             |           
            
                182.50
             |               
            
                180.00
             |                           
            
                182.50
             | 
            
                181.50
             |                     
            
                76.92
             |                                 
            
                15,445
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/3/2017
             | 
            
                +1.00 / +0.56%
             |             
            
                180.00
             |           
            
                183.00
             |               
            
                180.00
             |                           
            
                181.00
             | 
            
                180.00
             |                     
            
                76.29
             |                                 
            
                19,028
             |            
            
                 
             |                                       
         
    
        
            | 
                4/28/2017
             | 
            
                +8.60 / +5.02%
             |             
            
                169.50
             |           
            
                185.00
             |               
            
                168.00
             |                           
            
                180.00
             | 
            
                171.40
             |                     
            
                75.87
             |                                 
            
                23,630
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/27/2017
             | 
            
                +5.40 / +3.25%
             |             
            
                169.00
             |           
            
                171.80
             |               
            
                169.00
             |                           
            
                171.40
             | 
            
                170.30
             |                     
            
                72.24
             |                                 
            
                9,645
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2017
             | 
            
                0.00 / 0.00%
             |             
            
                166.00
             |           
            
                171.00
             |               
            
                163.00
             |                           
            
                166.00
             | 
            
                166.00
             |                     
            
                69.97
             |                                 
            
                39,030
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/25/2017
             | 
            
                -4.00 / -2.35%
             |             
            
                171.00
             |           
            
                171.00
             |               
            
                164.00
             |                           
            
                166.00
             | 
            
                168.41
             |                     
            
                69.97
             |                                 
            
                31,160
             |            
            
                 
             |                                       
         
    
        
            | 
                4/24/2017
             | 
            
                +8.00 / +4.94%
             |             
            
                165.00
             |           
            
                173.00
             |               
            
                165.00
             |                           
            
                170.00
             | 
            
                169.72
             |                     
            
                71.65
             |                                 
            
                58,810
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/21/2017
             | 
            
                +7.00 / +4.52%
             |             
            
                155.00
             |           
            
                166.20
             |               
            
                155.00
             |                           
            
                162.00
             | 
            
                161.35
             |                     
            
                68.28
             |                                 
            
                66,822
             |            
            
                 
             |                                       
         
    
        
            | 
                4/20/2017
             | 
            
                +2.00 / +1.31%
             |             
            
                153.50
             |           
            
                155.00
             |               
            
                153.00
             |                           
            
                155.00
             | 
            
                153.00
             |                     
            
                65.33
             |                                 
            
                11,298
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/19/2017
             | 
            
                +4.70 / +3.17%
             |             
            
                149.50
             |           
            
                160.00
             |               
            
                149.50
             |                           
            
                153.00
             | 
            
                153.00
             |                     
            
                64.49
             |                                 
            
                43,809
             |            
            
                 
             |                                       
         
    
        
            | 
                4/18/2017
             | 
            
                -1.60 / -1.07%
             |             
            
                150.00
             |           
            
                150.50
             |               
            
                148.00
             |                           
            
                148.30
             | 
            
                149.36
             |                     
            
                62.51
             |                                 
            
                17,988
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/17/2017
             | 
            
                +3.50 / +2.39%
             |             
            
                147.90
             |           
            
                150.90
             |               
            
                147.90
             |                           
            
                149.90
             | 
            
                149.82
             |                     
            
                63.18
             |                                 
            
                30,460
             |            
            
                 
             |                                       
         
    
        
            | 
                4/14/2017
             | 
            
                +2.40 / +1.67%
             |             
            
                144.20
             |           
            
                147.60
             |               
            
                141.00
             |                           
            
                146.40
             | 
            
                144.00
             |                     
            
                61.71
             |                                 
            
                25,780
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/13/2017
             | 
            
                +4.70 / +3.37%
             |             
            
                139.50
             |           
            
                144.00
             |               
            
                139.50
             |                           
            
                144.00
             | 
            
                143.20
             |                     
            
                60.69
             |                                 
            
                19,240
             |            
            
                 
             |                                       
         
    
        
            | 
                4/12/2017
             | 
            
                0.00 / 0.00%
             |             
            
                139.30
             |           
            
                140.00
             |               
            
                138.00
             |                           
            
                139.30
             | 
            
                139.38
             |                     
            
                58.71
             |                                 
            
                7,660
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/11/2017
             | 
            
                +6.30 / +4.74%
             |             
            
                132.00
             |           
            
                141.80
             |               
            
                132.00
             |                           
            
                139.30
             | 
            
                133.00
             |                     
            
                58.71
             |                                 
            
                13,420
             |            
            
                 
             |                                       
         
    
        
            | 
                4/10/2017
             | 
            
                +6.00 / +4.72%
             |             
            
                126.50
             |           
            
                133.00
             |               
            
                126.50
             |                           
            
                133.00
             | 
            
                127.00
             |                     
            
                56.06
             |                                 
            
                46,900
             |  
            
                 
             |                                                              
             
    
         
    
    
 |