| Value | Category | Cases | |
|---|---|---|---|
| N1 | 154 |
51.3%
|
|
| N2 | 109 |
36.3%
|
|
| N3 | 26 |
8.7%
|
|
| N4 | 9 |
3%
|
|
| N5 | 1 |
0.3%
|
|
| N6 | 1 |
0.3%
|