| Value | Category | Cases | |
|---|---|---|---|
| . | 1 | 
                                    
                                    0.1%
                                 | |
| 01 | 3 | 
                                    
                                    0.2%
                                 | |
| 02 | 6 | 
                                    
                                    0.4%
                                 | |
| ?1 | 1 | 
                                    
                                    0.1%
                                 | |
| N-1 | 1 | 
                                    
                                    0.1%
                                 | |
| N0 | 1 | 
                                    
                                    0.1%
                                 | |
| N01 | 11 | 
                                    
                                    0.7%
                                 | |
| N02 | 3 | 
                                    
                                    0.2%
                                 | |
| N1 | 1075 | 
                                    
                                    68.3%
                                 | |
| N10 | 1 | 
                                    
                                    0.1%
                                 | |
| N2 | 257 | 
                                    
                                    16.3%
                                 | |
| N3 | 121 | 
                                    
                                    7.7%
                                 | |
| N4 | 51 | 
                                    
                                    3.2%
                                 | |
| N5 | 23 | 
                                    
                                    1.5%
                                 | |
| N6 | 7 | 
                                    
                                    0.4%
                                 | |
| NI | 12 | 
                                    
                                    0.8%
                                 |