| Value | Category | Cases | |
|---|---|---|---|
| N1 | 975 |
52.9%
|
|
| N2 | 603 |
32.7%
|
|
| N3 | 200 |
10.9%
|
|
| N4 | 49 |
2.7%
|
|
| N5 | 12 |
0.7%
|
|
| N6 | 3 |
0.2%
|
|
| N7 | 1 |
0.1%
|