| Value | Category | Cases | |
|---|---|---|---|
| 0 | 529 | 
                                    
                                    90.6%
                                 | |
| 1 | 34 | 
                                    
                                    5.8%
                                 | |
| 2 | 14 | 
                                    
                                    2.4%
                                 | |
| 3 | 3 | 
                                    
                                    0.5%
                                 | |
| 4 | 1 | 
                                    
                                    0.2%
                                 | |
| 5 | 1 | 
                                    
                                    0.2%
                                 | |
| 6 | 1 | 
                                    
                                    0.2%
                                 | |
| 8 | 1 | 
                                    
                                    0.2%
                                 | |
| Sysmiss | 517 |