| Value | Category | Cases | |
|---|---|---|---|
| 1 | The lowest level | 4 |
0.3%
|
| 2 | 2 | 6 |
0.5%
|
| 3 | 3 | 40 |
3.2%
|
| 4 | 4 | 102 |
8.2%
|
| 5 | 5 | 259 |
20.8%
|
| 6 | 6 | 330 |
26.5%
|
| 7 | 7 | 358 |
28.8%
|
| 8 | 8 | 129 |
10.4%
|
| 9 | 9 | 16 |
1.3%
|
| 10 | The highest level | 1 |
0.1%
|