| Value | Category | Cases | |
|---|---|---|---|
| N1 | 607 |
71.6%
|
|
| N2 | 202 |
23.8%
|
|
| N3 | 25 |
2.9%
|
|
| N4 | 1 |
0.1%
|
|
| N6 | 2 |
0.2%
|
|
| N9 | 11 |
1.3%
|