| Value | Category | Cases | |
|---|---|---|---|
| N01 | 42 | 
                                    
                                    18.2%
                                 | |
| N02 | 159 | 
                                    
                                    68.8%
                                 | |
| N03 | 24 | 
                                    
                                    10.4%
                                 | |
| N04 | 6 | 
                                    
                                    2.6%
                                 |