| Value | Category | Cases | |
|---|---|---|---|
| N1 | 43 |
19.8%
|
|
| N2 | 80 |
36.9%
|
|
| N3 | 57 |
26.3%
|
|
| N4 | 27 |
12.4%
|
|
| N5 | 10 |
4.6%
|