| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 | 
                                    
                                    0.1%
                                 | |
| 1 | 597 | 
                                    
                                    63.2%
                                 | |
| 2 | 174 | 
                                    
                                    18.4%
                                 | |
| 3 | 62 | 
                                    
                                    6.6%
                                 | |
| 4 | 43 | 
                                    
                                    4.6%
                                 | |
| 5 | 35 | 
                                    
                                    3.7%
                                 | |
| 6 | 33 | 
                                    
                                    3.5%
                                 | |
| Sysmiss | 93 |