| Value | Category | Cases | |
|---|---|---|---|
| N1 | 10 |
2.7%
|
|
| N2 | 305 |
82.2%
|
|
| N3 | 40 |
10.8%
|
|
| N4 | 9 |
2.4%
|
|
| N5 | 5 |
1.3%
|
|
| N6 | 1 |
0.3%
|
|
| R3 | 1 |
0.3%
|