| Value | Category | Cases | |
|---|---|---|---|
| N1 | 24 |
37.5%
|
|
| N2 | 17 |
26.6%
|
|
| N3 | 14 |
21.9%
|
|
| N4 | 4 |
6.3%
|
|
| N5 | 3 |
4.7%
|
|
| N6 | 1 |
1.6%
|
|
| N99 | 1 |
1.6%
|