| Value | Category | Cases | |
|---|---|---|---|
| 0 | 183 | 
                                    
                                    17.5%
                                 | |
| 1 | 63 | 
                                    
                                    6%
                                 | |
| 2 | 588 | 
                                    
                                    56.3%
                                 | |
| 3 | 211 | 
                                    
                                    20.2%
                                 | |
| Sysmiss | 1957 |