| Value | Category | Cases | |
|---|---|---|---|
| 1 | YES | 4289 | 
                                    
                                    30.1%
                                 | 
| 2 | NO | 9554 | 
                                    
                                    67.1%
                                 | 
| 9 | NO RESPONSE | 406 | 
                                    
                                    2.8%
                                 | 
| Sysmiss | 3295 |