| Value | Category | Cases | |
|---|---|---|---|
| N01 | 480 | 
                                    
                                    85.4%
                                 | |
| N02 | 63 | 
                                    
                                    11.2%
                                 | |
| N03 | 13 | 
                                    
                                    2.3%
                                 | |
| N04 | 6 | 
                                    
                                    1.1%
                                 |