| 
                 
                    Closing price on 5/6/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    70.50 | 
                 
                
                    | High | 
                    73.90 | 
                 
                
                    | Low | 
                    70.00 | 
                     
                
                    | Volume | 
                    2,910 | 
                                 
                
                    | Split-adjusted Price | 
                    49.07 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SSC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/6/2019
             | 
            
                -0.50 / -0.67%
             |             
            
                70.50
             |           
            
                73.90
             |               
            
                70.00
             |                           
            
                73.90
             | 
            
                70.10
             |                     
            
                49.07
             |                                 
            
                2,910
             |            
            
                 
             |                                       
         
    
        
            | 
                5/3/2019
             | 
            
                +4.40 / +6.29%
             |             
            
                69.90
             |           
            
                74.40
             |               
            
                69.90
             |                           
            
                74.40
             | 
            
                70.01
             |                     
            
                49.40
             |                                 
            
                16,640
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/2/2019
             | 
            
                0.00 / 0.00%
             |             
            
                70.00
             |           
            
                70.00
             |               
            
                70.00
             |                           
            
                70.00
             | 
            
                70.00
             |                     
            
                46.48
             |                                 
            
                25,930
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2019
             | 
            
                0.00 / 0.00%
             |             
            
                70.00
             |           
            
                70.00
             |               
            
                70.00
             |                           
            
                70.00
             | 
            
                70.00
             |                     
            
                46.48
             |                                 
            
                1,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/25/2019
             | 
            
                0.00 / 0.00%
             |             
            
                65.30
             |           
            
                70.00
             |               
            
                65.20
             |                           
            
                70.00
             | 
            
                68.74
             |                     
            
                46.48
             |                                 
            
                9,790
             |            
            
                 
             |                                       
         
    
        
            | 
                4/24/2019
             | 
            
                0.00 / 0.00%
             |             
            
                69.00
             |           
            
                70.00
             |               
            
                65.30
             |                           
            
                70.00
             | 
            
                69.97
             |                     
            
                46.48
             |                                 
            
                45,220
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/23/2019
             | 
            
                0.00 / 0.00%
             |             
            
                69.80
             |           
            
                70.00
             |               
            
                69.80
             |                           
            
                70.00
             | 
            
                69.97
             |                     
            
                46.48
             |                                 
            
                46,960
             |            
            
                 
             |                                       
         
    
        
            | 
                4/22/2019
             | 
            
                0.00 / 0.00%
             |             
            
                68.00
             |           
            
                70.00
             |               
            
                68.00
             |                           
            
                70.00
             | 
            
                69.76
             |                     
            
                46.48
             |                                 
            
                53,580
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/19/2019
             | 
            
                +1.60 / +2.34%
             |             
            
                68.50
             |           
            
                70.00
             |               
            
                68.50
             |                           
            
                70.00
             | 
            
                69.92
             |                     
            
                46.48
             |                                 
            
                54,320
             |            
            
                 
             |                                       
         
    
        
            | 
                4/18/2019
             | 
            
                +4.40 / +6.88%
             |             
            
                63.80
             |           
            
                68.40
             |               
            
                63.80
             |                           
            
                68.40
             | 
            
                66.56
             |                     
            
                45.42
             |                                 
            
                9,450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/17/2019
             | 
            
                +4.00 / +6.67%
             |             
            
                60.00
             |           
            
                64.00
             |               
            
                59.60
             |                           
            
                64.00
             | 
            
                62.66
             |                     
            
                42.49
             |                                 
            
                2,330
             |            
            
                 
             |                                       
         
    
        
            | 
                4/16/2019
             | 
            
                +2.00 / +3.45%
             |             
            
                55.10
             |           
            
                61.80
             |               
            
                55.10
             |                           
            
                60.00
             | 
            
                59.60
             |                     
            
                39.84
             |                                 
            
                3,540
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/12/2019
             | 
            
                0.00 / 0.00%
             |             
            
                55.10
             |           
            
                59.00
             |               
            
                55.10
             |                           
            
                58.00
             | 
            
                56.80
             |                     
            
                38.51
             |                                 
            
                130
             |            
            
                 
             |                                       
         
    
        
            | 
                4/11/2019
             | 
            
                -2.40 / -3.97%
             |             
            
                63.80
             |           
            
                63.80
             |               
            
                56.20
             |                           
            
                58.00
             | 
            
                57.25
             |                     
            
                38.51
             |                                 
            
                1,380
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/10/2019
             | 
            
                -3.30 / -5.18%
             |             
            
                59.30
             |           
            
                60.40
             |               
            
                59.30
             |                           
            
                60.40
             | 
            
                59.85
             |                     
            
                40.10
             |                                 
            
                310
             |            
            
                 
             |                                       
         
    
        
            | 
                4/9/2019
             | 
            
                0.00 / 0.00%
             |             
            
                63.40
             |           
            
                63.70
             |               
            
                63.40
             |                           
            
                63.70
             | 
            
                63.55
             |                     
            
                42.29
             |                                 
            
                40
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/8/2019
             | 
            
                0.00 / 0.00%
             |             
            
                63.70
             |           
            
                63.70
             |               
            
                63.70
             |                           
            
                63.70
             | 
            
                63.70
             |                     
            
                42.29
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                4/5/2019
             | 
            
                +3.80 / +6.34%
             |             
            
                56.10
             |           
            
                63.70
             |               
            
                56.10
             |                           
            
                63.70
             | 
            
                56.28
             |                     
            
                42.29
             |                                 
            
                2,470
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/4/2019
             | 
            
                -0.10 / -0.17%
             |             
            
                64.00
             |           
            
                64.00
             |               
            
                56.10
             |                           
            
                59.90
             | 
            
                60.00
             |                     
            
                39.77
             |                                 
            
                50
             |            
            
                 
             |                                       
         
    
        
            | 
                4/3/2019
             | 
            
                -4.50 / -6.98%
             |             
            
                60.00
             |           
            
                60.00
             |               
            
                60.00
             |                           
            
                60.00
             | 
            
                60.00
             |                     
            
                39.84
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/2/2019
             | 
            
                +0.70 / +1.10%
             |             
            
                63.80
             |           
            
                64.50
             |               
            
                63.70
             |                           
            
                64.50
             | 
            
                64.13
             |                     
            
                42.83
             |                                 
            
                600
             |            
            
                 
             |                                       
         
    
        
            | 
                4/1/2019
             | 
            
                0.00 / 0.00%
             |             
            
                63.80
             |           
            
                63.80
             |               
            
                63.80
             |                           
            
                63.80
             | 
            
                63.80
             |                     
            
                42.36
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/29/2019
             | 
            
                -0.50 / -0.78%
             |             
            
                60.10
             |           
            
                63.80
             |               
            
                59.80
             |                           
            
                63.80
             | 
            
                61.11
             |                     
            
                42.36
             |                                 
            
                180
             |            
            
                 
             |                                       
         
    
        
            | 
                3/28/2019
             | 
            
                0.00 / 0.00%
             |             
            
                64.30
             |           
            
                64.30
             |               
            
                64.30
             |                           
            
                64.30
             | 
            
                64.30
             |                     
            
                42.69
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/27/2019
             | 
            
                0.00 / 0.00%
             |             
            
                64.30
             |           
            
                64.30
             |               
            
                64.30
             |                           
            
                64.30
             | 
            
                64.30
             |                     
            
                42.69
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                3/26/2019
             | 
            
                0.00 / 0.00%
             |             
            
                64.30
             |           
            
                64.30
             |               
            
                64.30
             |                           
            
                64.30
             | 
            
                64.30
             |                     
            
                42.69
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/25/2019
             | 
            
                +3.70 / +6.11%
             |             
            
                64.30
             |           
            
                64.30
             |               
            
                64.30
             |                           
            
                64.30
             | 
            
                64.30
             |                     
            
                42.69
             |                                 
            
                10
             |            
            
                 
             |                                       
         
    
        
            | 
                3/22/2019
             | 
            
                -4.30 / -6.63%
             |             
            
                60.90
             |           
            
                60.90
             |               
            
                60.60
             |                           
            
                60.60
             | 
            
                60.75
             |                     
            
                40.24
             |                                 
            
                60
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/21/2019
             | 
            
                0.00 / 0.00%
             |             
            
                64.90
             |           
            
                64.90
             |               
            
                64.90
             |                           
            
                64.90
             | 
            
                64.90
             |                     
            
                43.09
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                3/20/2019
             | 
            
                0.00 / 0.00%
             |             
            
                64.90
             |           
            
                64.90
             |               
            
                64.90
             |                           
            
                64.90
             | 
            
                64.90
             |                     
            
                43.09
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
         
    
    
 |