| Value | Category | Cases | |
|---|---|---|---|
| N1 | 12 |
36.4%
|
|
| N2 | 10 |
30.3%
|
|
| N3 | 5 |
15.2%
|
|
| N4 | 2 |
6.1%
|
|
| N5 | 4 |
12.1%
|