| Value | Category | Cases | |
|---|---|---|---|
| N1 | 11 |
10.1%
|
|
| N2 | 31 |
28.4%
|
|
| N3 | 28 |
25.7%
|
|
| N4 | 15 |
13.8%
|
|
| N5 | 11 |
10.1%
|
|
| N6 | 8 |
7.3%
|
|
| N7 | 3 |
2.8%
|
|
| N8 | 2 |
1.8%
|