| Value | Category | Cases | |
|---|---|---|---|
| 0 | 3147 | 
                                    
                                    68%
                                 | |
| 1 | 1007 | 
                                    
                                    21.8%
                                 | |
| 2 | 401 | 
                                    
                                    8.7%
                                 | |
| 3 | 73 | 
                                    
                                    1.6%
                                 | |
| Sysmiss | 2206 |