| Value | Category | Cases | |
|---|---|---|---|
| 1 | YES | 30 | 
                                    
                                    0.1%
                                 | 
| 2 | NO | 20172 | 
                                    
                                    99.8%
                                 | 
| 9 | NO RESPONSE | 12 | 
                                    
                                    0.1%
                                 | 
| Sysmiss | 307 |