| Value | Category | Cases | |
|---|---|---|---|
| N1 | 14 |
12.7%
|
|
| N2 | 58 |
52.7%
|
|
| N3 | 28 |
25.5%
|
|
| N4 | 4 |
3.6%
|
|
| N5 | 6 |
5.5%
|