| Value | Category | Cases | |
|---|---|---|---|
| N1 | 7 |
10.4%
|
|
| N2 | 35 |
52.2%
|
|
| N3 | 14 |
20.9%
|
|
| N4 | 7 |
10.4%
|
|
| N5 | 4 |
6%
|