| Value | Category | Cases | |
|---|---|---|---|
| N1 | 665 |
67.4%
|
|
| N2 | 213 |
21.6%
|
|
| N3 | 76 |
7.7%
|
|
| N4 | 29 |
2.9%
|
|
| N5 | 4 |
0.4%
|