| Value | Category | Cases | |
|---|---|---|---|
| N1 | 601 | 
                                    
                                    36.2%
                                 | |
| N2 | 518 | 
                                    
                                    31.2%
                                 | |
| N3 | 292 | 
                                    
                                    17.6%
                                 | |
| N4 | 138 | 
                                    
                                    8.3%
                                 | |
| N5 | 62 | 
                                    
                                    3.7%
                                 | |
| N6 | 23 | 
                                    
                                    1.4%
                                 | |
| N7 | 15 | 
                                    
                                    0.9%
                                 | |
| N8 | 7 | 
                                    
                                    0.4%
                                 | |
| N9 | 4 | 
                                    
                                    0.2%
                                 |