| Value | Category | Cases | |
|---|---|---|---|
| N1 | 370 | 
                                    
                                    35%
                                 | |
| N12 | 1 | 
                                    
                                    0.1%
                                 | |
| N2 | 275 | 
                                    
                                    26%
                                 | |
| N3 | 193 | 
                                    
                                    18.3%
                                 | |
| N4 | 104 | 
                                    
                                    9.8%
                                 | |
| N5 | 55 | 
                                    
                                    5.2%
                                 | |
| N6 | 16 | 
                                    
                                    1.5%
                                 | |
| N7 | 7 | 
                                    
                                    0.7%
                                 | |
| N8 | 1 | 
                                    
                                    0.1%
                                 | |
| N9 | 35 | 
                                    
                                    3.3%
                                 |