| Value | Category | Cases | |
|---|---|---|---|
| N1 | 28 | 
                                    
                                    28.9%
                                 | |
| N2 | 30 | 
                                    
                                    30.9%
                                 | |
| N3 | 26 | 
                                    
                                    26.8%
                                 | |
| N4 | 5 | 
                                    
                                    5.2%
                                 | |
| N5 | 3 | 
                                    
                                    3.1%
                                 | |
| N6 | 2 | 
                                    
                                    2.1%
                                 | |
| N7 | 2 | 
                                    
                                    2.1%
                                 | |
| N9 | 1 | 
                                    
                                    1%
                                 |