| Value | Category | Cases | |
|---|---|---|---|
| N1 | 1272 |
43.1%
|
|
| N2 | 1031 |
34.9%
|
|
| N3 | 401 |
13.6%
|
|
| N4 | 151 |
5.1%
|
|
| N5 | 48 |
1.6%
|
|
| N6 | 27 |
0.9%
|
|
| N7 | 13 |
0.4%
|
|
| N8 | 6 |
0.2%
|
|
| N9 | 2 |
0.1%
|