| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 71262 | 
                                    
                                    64%
                                 | 
| 2 | no | 39143 | 
                                    
                                    35.2%
                                 | 
| 9 | not stated | 904 | 
                                    
                                    0.8%
                                 | 
| Sysmiss | 1 |