| Value | Category | Cases | |
|---|---|---|---|
| 0 | 3669 | 
                                    
                                    79.3%
                                 | |
| 1 | 247 | 
                                    
                                    5.3%
                                 | |
| 2 | 347 | 
                                    
                                    7.5%
                                 | |
| 3 | 365 | 
                                    
                                    7.9%
                                 | |
| Sysmiss | 2206 |