| Value | Category | Cases | |
|---|---|---|---|
| 0 | 740 | 
                                    
                                    54.8%
                                 | |
| 1 | 406 | 
                                    
                                    30.1%
                                 | |
| 2 | 112 | 
                                    
                                    8.3%
                                 | |
| 3 | 57 | 
                                    
                                    4.2%
                                 | |
| 4 | 24 | 
                                    
                                    1.8%
                                 | |
| 5 | 10 | 
                                    
                                    0.7%
                                 | |
| 8 | 1 | 
                                    
                                    0.1%
                                 | |
| 13 | 1 | 
                                    
                                    0.1%
                                 | |
| Sysmiss | 149 |