| Value | Category | Cases | |
|---|---|---|---|
| 1 | 4 |
0.5%
|
|
| 2 | 3 |
0.4%
|
|
| 4 | 1 |
0.1%
|
|
| ? | 127 |
16.3%
|
|
| N1 | 246 |
31.6%
|
|
| N2 | 334 |
42.9%
|
|
| N2. | 1 |
0.1%
|
|
| N3 | 43 |
5.5%
|
|
| N4 | 15 |
1.9%
|
|
| N5 | 5 |
0.6%
|