| Value | Category | Cases | |
|---|---|---|---|
| N1 | 947 | 
                                    
                                    86.5%
                                 | |
| N2 | 102 | 
                                    
                                    9.3%
                                 | |
| N3 | 33 | 
                                    
                                    3%
                                 | |
| N4 | 12 | 
                                    
                                    1.1%
                                 | |
| N5 | 1 | 
                                    
                                    0.1%
                                 |