| Value | Category | Cases | |
|---|---|---|---|
| 1 | Always | 4235 | 
                                                                 
                                    
                                    68.7%
                                 
                                                             | 
                                                        
                    
| 2 | Sometimes | 1403 | 
                                                                 
                                    
                                    22.8%
                                 
                                                             | 
                                                        
                    
| 3 | Rarely | 439 | 
                                                                 
                                    
                                    7.1%
                                 
                                                             | 
                                                        
                    
| 4 | Never | 88 | 
                                                                 
                                    
                                    1.4%
                                 
                                                             | 
                                                        
                    
| 88 | N.A. | 2938 | |
| 98 | D.K. | 6 | |
| 99 | 19 |