| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 10478 | 
                                    
                                    34.7%
                                 | 
| 2 | NO | 15923 | 
                                    
                                    52.8%
                                 | 
| Sysmiss | 3760 | 
                                    
                                    12.5%
                                 |