| Value | Category | Cases | |
|---|---|---|---|
| 0 | 29 | 
                                    
                                    78.4%
                                 | |
| 000 | 1 | 
                                    
                                    2.7%
                                 | |
| N1 | 1 | 
                                    
                                    2.7%
                                 | |
| N2 | 1 | 
                                    
                                    2.7%
                                 | |
| N3 | 3 | 
                                    
                                    8.1%
                                 | |
| N4 | 1 | 
                                    
                                    2.7%
                                 | |
| N5 | 1 | 
                                    
                                    2.7%
                                 |